Holley 600 vacuum secondary jet sizes. 3000 stall, 391 rear end gears, headers, victer jr.

Holley 600 vacuum secondary jet sizes Slayer Series street carburetors are designed with many of the same innovations and features that are built into all QFT™ race-winning carburetors, including changeable air bleeds and power valve channel restrictions. 030" overbore) Chevy Top to bottom:-14" Moroso 3" tall drop base filter-Holley 3310-2 (750 vac sec, 72 jets, 134-21 plate, 6. Remember this is with dual carbs which have . is airhorn delete, choke delete, metering block kit on secondaries. Joined: Jun 9, 2017 Posts: 381. Most likely with a 4160 you have a secondary metering plate = non-adjustable. Relatively stock 302 with an RV cam, headers and dual exhaust. 049 orifice . Carburetor Installation and Tuning. Then they have the Holley 600 vacuum secondary carburetors models 1850 and 80457 carburetors which are bare bones and mostly for the every day driver with mild cams and nothing for all out racing and for just a jet size, and about 4. You Secondary Jet Size: 74 Carburetor Color: Tumble polished Ford Kickdown: No Throttle Linkage Type: Universal Carburetor Height (in. They are very responsive on a mild motor. Customer The "competiton style" annular booster (as opposed to the various "fuel millage" versions that came in some of Holley's 600cfm vacuum secondary O. 029 34R9716-34 34. 25. Set your transition Engine Mods - What size jets are you using in your Holley's - Presenty have a 750 dp mech with 72 primary and 78 secondary. Be sure to bevel the sharp drilled holes edge the entry Brawler diecast carburetors are machined and assembled by craftsman right here in the USA. We are proud to announce the newest memberof our carburetor family- the Street Warrior. Holley's 0-8007 is calibrated and intended for small V8s or 6 cylinder engines as well as 2x4 street I think you would be happier with a 1848 450 vacuum secondary. 031" Superformance is an Australia based supplier of Holley 750, 650, 600, 465, 350, Two Barrel Carburetors (2-bbl) Four Barrel Carburetors (4-bbl) Vacuum Secondary Carburetor (Vac Sec) Mechanical Secondaries Carburetors ( Double Pumper) Mechanical HOLLEY DASHPOT/SOLENOID BRACKET HEX SIZE 1 1/4 IN THREAD SIZE 7/8 I. 5 8. Holley 4160 Carburetors with qualifying orders of $109. What size carb?? 4160 is a model number, not a list number. Double Pumper carburetors are an American icon when it comes to performance carburetors. that 600 vacuum secondary is way too smallyou should run at least a 650 double pumper up to maybe a 750 dpthen you'll see a tad more power. Order: 1-800-624-1358. This establishes whether the engine runs cleanly to 3,000 rpm without a hesitation or misfire. secondary carb is similar in size, and the primaries are almost identical (ventury sizes the same, throttle plates a little bigger on the 4224) the callibration is completely different, mainly because the 1850 runs a Also, you said it runs best when you totally close off the secondary, is that a vacuum secondary carb? Maybe you put the spring for the secondary vacuum thingy in wrong and it's trying 600 vac sec holley, GT40P heads (full port), Yella Terra roller rockers, Pacemaker tuned headers, C4(C9 ---Jets - like MotorHead Holley equips all vacuum secondary carburetors from the factory with the heaviest This tunnel ram is set up with a pair of 0-1850 600-cfm Holley vacuum secondary carbs. 0663: 68: 0. Get a new carb. 026 squirter. So if we were going to re-jet a carburetor for 7,000 feet, this would mean reducing both the primary and secondary jets by three numbers – or from the 73 down to 70. 5PV primary Need advice on a good starting point for jet sizes. NOMENCLATURE - MODEL 4010 Ref. 5 to 10. Carburetor, Slayer Series, 600 cfm, Square Bore, Vacuum Secondary, Electric Choke, Polished, Each See More Specifications | Check the Fit. I have adjustable PVCR jets too. 031") Q-jet. 050: 204 - 214, gross lift 420 - 443 so would the 600 cfm vac secondary if budget is a concern. Brand: Holley. If the plugs are black, drop 2 sizes, install new plugs, and see if they come out a nice tan color. I have a new holley 750 vacuum secondary carb that I am going to put on my truck. Edit- just saw you've got a jet plate on the secondary side with the PV blocked. Profile Page An Edelbrock 1406 600 cfm vacuum secondary electric choke is a bolt-on-and-go carburetor for SBCs How does the oriface size/volume come into play even though the percentage ratio of fuel (IFR) to air (IAB) is I took a Holley 600 vacuum secondary main body that was an original 80457 model made back ratio gauge still does not make it a walk in the park and easy to tune like turning the idle mixture screws or changing jets. One size fits all. 3310 -750cfm. 059 . Dual feed fuel inlets assure you get all the fuel you need while its vacuum secondaries and electric choke make it amazingly universal. The holley 670 street avenger is the same exact same parts as the 600 holley but just with a secondary SECONDARY DRY FLOAT SETTING PUMP CAM POSITION CHOKE QUALIFY ADJUSTMENT CHOKE INDEX SETTING Holley Technical Support 1801 Russellville Road Bowling Green, KY 42101 270-781-9741 www. Most performance-oriented Holley carbs have jets on both the primary and secondary sides. Could this be because the carb uses vacuum secondaries? Thanks in advance! 2X Edited by 2Xtreme - Jul/19/2013 at 10:32am Secondary Jet Size: 76 Primary Outer Air Bleed Sizes Included: 71 Primary Inner Air Bleed Sizes Included: 31 and 4-corner idle adjustment on all mechanical secondary models. I have taken my How to properly adjust the secondary speed screw on Holley carbs. If it is a 600 cfm then great. All the jet sizes I've tried have Jets won't affect your idle though. Nozzle . The primary jet size on my Holley 4160 is listed as part 122-632. Re: What size Holley jets should I use? The list # lookup will tell you the primary jet sizes. 66 Sat. Free Shipping - Holley Street Warrior Carburetors with qualifying orders of $109. 029 The chart below can be used as a guide when correlating main metering jet part numbers to secondary metering plates. Decrease the jet size primary and secondary, one number for every 2000 ft. Engine/Car info VerticalScope Inc. I am about ready to set up my used Holley. Venturi 1 5/16 with 1 9/16 throttle bores Holley 4150 series 650 CFM Pr. 5 idle vac 12. Carb started life with: 70 primary jets, 74 secondary jets 6. My Holley catalog lists the stock primary jets of the common 600 cfm vac secondary R-1850-AAS Holley as 22BP-40-65. I have a modded 302, with a 600 cfm holley 4160,and just wanted to know what size anyone would suggest, A 600 is fine because it it vacuum secondary and will This would be the standard plate on a 600 CFM vacuum secondary Holley 4V carb. Just looking for input as may pick up a few Does anyone know what the metering plate on a 600 & 750 vac secondary Holley is equivilant to in jet size? I have a metering block for a vac secondary to convert it to jets and wanted to get a good baseline to start with. Anyone know the IFR size in a 4150/60 Holley 650 carb? 390 4BBL Holley on a Cain aluminium intake Genie headers Oh yeah, I'm using a 45 power valve. Surprisingly, the larger carburetor ran considerably Primary Pump Nozzle Size: 31: Product Type: Carburetor: Secondaries: Vacuum: Secondary Main Jet: 74: Supercharged Application: No: Throttle Bore: 1-9/16 inch: Warning: California Proposition 65: Warranty: Limited 90 Day: Holley The carb I am using is a holley 600 vacuum secondary with a metering block conversion on the rear. You . If you look at Holley jets and plates with a magnifying glass you'll see that there are entrance and exit angles and the angles and orifice holes are very clean, no drill marks or other rough edges. , a #74 jet actually has a . 078 primary and . 0 WOT 12. I will take info on the Truck Avenger dudes, too. Vac at idle in gear is 9". Some of the old Holley secondary vacuum canisters used a steel check ball inside them, VerticalScope Inc. Question is can I or should I go bigger with the jets? Its running ok now, but would like some more grunt. I think the stock jet size in this holley is 66. If anyone is running something similar and can help point me the right way. 55 posi rear) C3 Tech/Performance - Jet size for 780 holley - I am going to run my Holley 780 for the rest of the summer, I have 74 jets in the primary and 80 in the secondary. Is there a The motor is pretty much stock, it has an aftermarket performer intake, headers and a holley 600. I dropped one size (I thought 2 until I removed the old ones), and the problem is worse. Brawlers come with the 6. One 600 may need different jet sizes than another 600. M. and 68 Sec. 5 Hg. I'll follow the book to replace the jets and secondary spring. Its a vacuum style secondary carb. I looked around the net and found really good guides to tuning, but no ideas on where to start with jet sizing. Their 600-cfm, square-bore, vacuum-sec I am wondering what Jet sizes I should start with on my 4160? I see that they come standard with a 64 main and 70 secondary. I pull 18 hg vacuum at idle, cam is unknown, running an edelbrock performer rpm intake manifold, tri-y headers, and a T5 5 speed for transmission. But there is an important exception: 4160 carburetors (such as most O-3310's and O-1850's) do not have replaceable jets on the secondary side. 031 or a . each additional 1/32" hole add about 3 jet sizes to the stock jet hole in the sec metering plate. intake, street strip car_ need input for primary and secondary jet sizes, am using power valve on primary side, thanks ray I have a Holley 650 with vacuum secondaries that I am working on getting jetted properly with an AFR and he was not concerned with the spread in primary and seconday jetting that I have and that they often recommend 10 The holley 600 4776 double pumper has the same body size as the 650 double pumper but the only difference in the most part is the 600 has the 1 9/16 base plate while the 650 has the bigger 1 11/16 size. What are some I have opened up the secondary side of the carb to see what jet size is in there. You can find two jet sizes with the same diameter bore because the lengths of the bore and the entrance and exit shapes are different. It has standard jets, 122-602 (0. Jetting has to do with how the carb's designed. The chart is color coded to show the part numbers that are still available On a fairly standard 351, you can't beat a holley 600 vac. With that cam you need approx 18 deg base & 18 deg mech in dist all in by 2800-3k rpm. Bill Tichenor. carbs) (. I am using the same exact metering blocks that was used on the previous carb. Add to cart. Its the same metering block holley uses on there 600 vacuum secondary carburetors conversion kits and is already the same block on the rear of the older holley 670 street avengers that was On another note my book for the street warrior said that my secondary plate is a 34r9716-6 which I think is a 122-69 jet size with a . These two are the most popular of all Holley carburetors as vacuum secondary, We have included a chart of the numbers stamped on the front of the metering plate that lists the equivalent jet size so you know what jet is necessary to complete Holley 600 cfm vac. The jets are accessed by removing the fuel bowls on each end of the carburetor. 062 PVCR’s. The full manifold vacuum source in the front of the throttle body provides vacuum for proper operation of the air cleaner, the The orifice size in the jet does not correspond with the Holley jet number. secondary spring. as soon as you touch the throttle there is a dead spot or pause and then accelerates and runs great. The AF ratio is 10. It has become a popular choice as an affordable, vacuum secondary 750-cfm carburetor. Shipping Weight. Does anyone know what size this is? I have 65's in my Holley 1850 - 600 cfm vacuum secondary. Part Number: HLY-0-80457S. If you have to move that many jet sizes from stock calibration, you have Use that one. 250 in. They come available in both vacuum and mechanical secondary versions to meet your engine's needs. 6 pump gas mtr. 9. Holley SKU: HOL1850S. I purchased and installed a Holley 750 street HP vacuum secondary. cc’s. 66 Sat; Jul 16, 2024; Fuel and Air Systems; 2. We could just add 3 jets sizes to the secondary side of the carburetor. Holley 0-1850C - 0-1850C 600 cfm Classic Carburetor, Manual Choke, Vacuum Mechanical vs Vacuum Secondary Carburetors. 5 Hg Carburetor Color: Silver Ford Kickdown: Holley carburetor specifications, list numbers, stock jetting If you have a longer duration performance or race cam you may need to change the power valves to handle reduced engine vacuum signal to the LIST # CFM STOCK JETTING POWER VALVE TYPE 1850-2 600 (F)66,(R)plate 134-9 6. The goal in designing the Street Warrior was to take all of those years of experience and build the ultimate performance street carburetor for your daily driver that would not break the bank. in 63 nova , 350 trans. A typical 3310-9 750 vacuum secondary Holley on a 355ci small-block Chevy with a mild cam, good heads, intake, and headers will likely be very close to what the engine wants. Most Holley vacuum secondary carbs do not have a metering block and jets on the secondary side. Holley's all-aluminum 0-80458SA carburetor was designed for the rodder with a mildly built engine and a desire for a racy dual inlet look, but who only needs a 600 CFM carburetor. "purple" vac. Slow air movement through the carb makes for sluggish throttle response as well as some other situations. is on 383sbc , 9. difference in flow between. I Have since gone to a 600 vac sec unit. 5 to 379. E. How many sizes would I approximately have to jet down the primaries to get it closer to 14. Here are the proper steps for setting the idle mixture needles. 86-0. Quick Fuel Slayer Series Carburetors SL-600-VS QFT-SL-600-VS. Standard jets are available. 5 4160 1850-3 600 (F)66,(R)plate 134-9 6. 1 2. My last tune that was just fine was the same Holley 600 vacuum secondary. 30 over Edelbrock air-gap intake manifold Holley 750 cfm vacum secondary carb (80508s) - jet size 68 Cam - Adv duration: 270 - 280, dur at . The car seems to run fine with that. 028 primary idle feed restrictor and a . 88, depending a bit from engine to engine. Post Cancel. Dual inlet with just the front bowl accelerater pump. Although the 600 vac. 031 idle feed restrictor in the secondary metering plate. PV factory 3. Since I am at 600' elevation, I put two new Holley 1850 600 cfm vacuum secondary carburetors on a new Ford stroker. Also getting some stumble. 031 ifr and the secondary side has a . How many Jet sizes will raise AFR by 1 full point. You can buy different plates from Holley having various "jet" sizes. 060 ) primaries and 122-83 (0. Idle mixture needles are found on the primary metering blocks. AVS2 650 thoughts. Edelbrock AVS2 650 vs Holley 600 Vac Sec (1850) - Track Shootout. 5%. 032 4776 (-1 -2) 600cfm Primary Main Jets 66 Secondary Main Jets 76 Home Help Center Holley Classic Double Pumper Specifications: Contact Informaton . This information is from page 81 of the Holley catalog. Brawler Street carburetors Holley has been the world leader in carburetors for over 100 years. ): 3. came with #64 primaries even though my book said they were #65's. 300" Product Type: Carburetor Secondaries: Vacuum Secondary Main Jet: 74 Secondary Venturii Size: 1. the size. Vendor Part Number. Similarly, Stock engines can have high vacuum readings (10-18 inches at idle) and the Holley power valves with higher readings like 6. 5 Cruise 3k load 10. I have a 650 Holley, the 650 was a low mileage carb that was run on a drag car, it has the nozzle type squirters and had larger jets in it. An Article About. I've ran a 600 DP on a 3. Holley Classic Carburettor 600 CFM – Vacuum Secondary #1850S. per m inute at a specified. We input the 355ci small-block with a 6,000 rpm peak and the program produced several four barrel, vacuum secondary Division produced the Quadrajet carburetor that employed what is called a spread bore bolt pattern to accommodate the Q-Jet’s huge secondary throttle bores. 029 Primary. The Holley 1850 has same venturie sizes as the above carbs but with smaller 1 9/16 throttle bores. sec. 025 squirter nozzle. 327 (. 5. Your secondary side seems 1-2 numbers rich for a 600 though. 70 seems really big, and more for a Holley Jet numbers are all flow based. 0 cubic centimeters. But don't let the low price fool Primary main jets 69 Secondary main jets 71 Power Valve 6. The carb works excellent all the way around except that one problem and plugs are good and tan color so jet size is pretty close but this has to do with the transition circuit somehow. Welcome, guest. as 22BP—40-XX, where XX is. Can someone give me an idea of good primary and secondary size jets to start with currently has 62 Pri. You can fine tune it by honing the hole by hand with the drill bit. IMO Al Holley Street Warrior 600 cfm Square Bore 4160 4BBL Carburetor - 080457S. I think the max jet sizing Holley recommends is +/- 5 sizes from stock. Everybody knows about the Holley 3310. 5 4160 Showing 14” manifold vacuum in N, 12” in Drive. Holley; Rochester; Stromberg; Autolite; Holley Secondary Metering Plates MAIN HOLE IDLE HOLE HOLLEY PART “A” “B” P/N STAMPED. Holley jets are broached, flowed, and stamped according to flow rate. A 600 Holley vacuum secondary normally comes with a leaner calibration of a . Stupid me for not writing it down during disassembly. Title: MODEL 4160 SPECIFICATIONS Author: What is the stock jet sizes in my 4160 and which ones should I buy to downsize from stock using Here is a few videos on rebuilding a Holley 600 vacuum secondary carb which pretty much is the same exact thing as yours and there might be a few things of difference but pretty much 95 percent will get it done for your if you have any i have a brand new holley 600 cfm vacuum secondary and electric choke carb on a new 350 engine with a 700r4 trans. 358 Posts. Holley jets range in size from 40 to 99, with the stock jet size differing based on the carburetor model and engine application. We carry jets for most Holley carburetors. A Quick Fuel slayer 600 comes with a . This procedure is only used on engines with large duration camshaft that have very low vacuum at idle. can any one recommended jet sizes for a 600 holley, fitted to a mildly cammed 289. 2. When I pulled the front bowl, I noticed the jets were different sizes, a 66 & a 69. Holley manufactures each carburetor with a set of jets that BTW, Holley jets and jet plates rated on flow, not physical orifice size. But the one you buy today isn't quite the same as the original 3310 Carburetors are calibrated at 70° at sea level. Primary Power Valve: 6. 0685: 70: The key may be in the power valve size! A Holley power valve size chart can help you determine the Consult a Holley power valve size chart to vacuum. Brett Reply. 3000 stall, 391 rear end gears, headers, victer jr. C3 Tech/Performance - Holley 4150 rich at WOT, what jet sizes? - My 72 LT1 has a Holley 4160 that I converted to a 4150 with changeable jets in the secondary metering block. 5 now 6. Holley also suggests decreasing one jet size for every 2,000 foot increase in altitude. NEVER drill jets, as this seriously alters flow characteristics. 74 out of 5 stars. holley. and i am having problems with a flat spot as soon as you accelerate at any speed. Tags. 026 34R9716-3 3. 031 in. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Fuel Injection, Carburetion & Fuel System - Holley jet sizes - I need tuning help. Holley Vacuum Secondary (reco) Showing 10–18 of 30 results 600 CFM Electric Choke Carburettor Polished Reco RH600ES <span-style=”font-size:-large; Holley Vacuum Secondary (reco) 600 CFM Square Bore Vac Sec Marine Carburettor Buy HOLLEY QUICK FUEL BRAWLER CARBURETOR,600 CFM,4150,4 BARREL 3 Finish: Shiny Fuel: Gasoline Fuel System: Carbureted High Speed Air Bleed: 28:28 Idle Air Bleed Size: 70;70 Material: Aluminum Model: Brawler Diecast 1. 070 IAB's. downleg boosters. , ported single plane intake. I added this in order to make the point that the small hole size is not related to Holley jet number sizes directly. You slowly open the throttle so the accelerator pump is not brought into action. Jul 23, 2024. 5 power valve, yellow vacuum springs and a . , 111 Peter Street, Suite 600, Toronto, Ontario Before with the 600 Holley 1 9/16 throttle plates I had more than enough IFR running . It is running way too rich. The full manifold vacuum source in the front of the throttle body provides vacuum for proper operation of the air cleaner, the Holley All-Aluminum Vacuum Secondary Carburetors New all-aluminum versions of Holley's favorite traditional carburetors. 5 to 14. Use that one. FAX: 407-422-2741. 4160 models come in numerous sizes. Reconnect the appropriate vacuum hoses to the carburetor, noting the correct fitting from Figure 2a and Figure 3. I haven't pulled the bowls of yet & seen what is fitted, thought I would grab a couple of bowl gaskets first in case they stuff up when I remove Most likely with a 4160 you have a secondary metering plate = non-adjustable. 5 Hg Primary Discharge Nozzle Size (in. With our 4. In 1975 Holley developed a Holley Quick Fuel Carburettor Vac Secondary 4160 390-600 Cfm Rebuild Kit quantity. Home (no check ball) deal to work OK if the secondary idle jet is the right size. I have a 383 stroker running approx 490 hp. 300 I had a friend hook his AFR gauge up to my 408CU stroker mild CAM with a 770 street avenger (Vacuum secondary) Primary jets 77 Secondary Jets 83 and got the following AFR Idle 14. A '50 has the more-expensive block. The 750 should be great for your donk if it's been warmed up. e. 5 Primary Pump Nozzle Size 31 Product Type Carburetor Secondaries Vacuum Secondary Main Jet 78 Supercharged Application No Get the Best Performance with Holley 0-80457S 600 cfm Street Warrior Carburetor, Electric Choke BR-67270 Brawler Diecast Carburetor 600 CFM, Vacuum Secondary, Electric Choke for Select 1955-1988 Chrysler, Factory spec for a 0-80770 770cfm avenger carb is 72 primary & 75 secondary if you stumble is at 10-9 in Hg of vacuum. 073 IAB's with the Idle mix screws 1 1/8 turn out for my Summer setting. 039 idle feed restrictor on the secondary metering plate. if the carb is a single feed with a secondary feed tube the secondary jets are non changeable. 92, too lean for optimum power The goal for max power is around 0. Don't trust your performance to just anyone, Holley is the only modular Brand: Holley Manufacturer's Part Number: 0-1850S CFM: 600 Fuel Category: Gasoline Remanufactured: No Number of Barrels: 4 Carburetor Flange: Square bore Carburetor Fuel System Type: Holley Choke: Manual Secondary Type: Vacuum Fuel Inlet: Single Primary Jet Size: 66 Primary Power Valve (Hg): 6. A 600 will get you hammering off the line too. Comment. - All aluminum construction - a 40% weight savings - Vacuum secondaries allow use on wide range of vehicles - Ford automatic kickdown linkage (does not work with Home Support Products I***e Motorsports Forum > I***e Motorsports > General Tuning Forum Holley 600 vac secondary tuning. 079 orifice). Now the Holley 80783 has same primary/secondary venturie size and throttle bore size as the 660,but with vacuum secondary which should give same peak power but better on the street than the 1 to 1 secondary throttle operation of the 660. 5 will work correctly. 065: 67: 0. 5:1. For cooler Fall weather I would go to . Carb combo with Holley 600 and 212 performer intake from edelbrock- You don't really want to mess with the jet size or do a lot of tuning stuff to the carb. Description 1 Fast Idle Cam Plate Screw 2 Choke Lever and Swivel Assembly 3 Fast Idle Cam Plate 4 Fast Idle Cam Spring 5 Fast Idle Cam 6 Choke Rod Retainer 7 Choke Lever Back-up Plate 8 Choke Rod Lever Molded 9 Choke Lever Spring 10 Choke Spring Retainer Washer 11 Push Nut Fastener 12 Fast Idle Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. The smell's now gone and the throttle metering control is like EFi. ): 0. secondary jet part #134-39 . It's designed to put X amount of fuel in the stream for Y amount of air. 048 with a pair of 68 jets and 74 secondary and it runs perfect at 600 holley jet size starters? Jump to Latest 21 - 35 of 35 Posts. 3. Recommended for You. Venturi Size (in): By David Freiburger Holley 1850s are inexpensive, factory rebuilds are even cheaper, and swap meet 1850s are nearly free. 440 engine with about 9. making it run way rich. As someone else said 65's or 66 size jets will be fine. 5 -13 range. View All Recommended Parts. 036 HSAB’s in all four corners. As such, there’s a variety of jet and air bleed sizes within that range of carbs. 95: Holley 3310 Decrease the jet size, then you would use a #79 Holley jet in the carb. I'm running 64 primary jets in my 600 vacuum 4bbl, and my light cruise AFR is in the 12. Was fooling with it on the dyno, and figured they'd be a little lean since they came with 64 jets in the front, and plates that are supposed to be equal to 66 jets in the back. 84 secondary jets and . So, if you drill out a jet plate . I've tried a 65 and an 85 PV and they just come in too soon, particularly the 85. ) When you combine that PVCR size with a 71 jet, it turns into the equivalent of an 84 jet in the primary when the power valve opens. Mechanical vs Vacuum Secondary Carburetors. Tolerance for a 65 ranges from. One way to check on jet size is to use the 3,000-rpm test. Adjust the links that close the secondary so the throttles are open equally at mid throttle (1/4 to ¾) positions. 6. If it does, the setup is at least close to the requirement. Sec. 14. Edelbrock Performer dual plane intake Holley 4000, 4 Barrel carburetor jet sizes, illustrated by application and by carburetor number. Hello, I just pulled my Holley 600 vacuum secondary apart and the two main jets are clearly marked “661” not “74” or “68 You can find two jet sizes with the same diameter bore because the lengths of the bore and the entrance and exit shapes are different. Overview. 5 power valve 31 squirter nozzles 70 outer air bleeds (idle), 28 inner air bleeds (secondaries) Pink acc pump cams in #1 position 30cc acc pumps Just wanted the following Holley tuning configuration on those of you running a 600cfm on a fairly stock 302 with C4 transmission: Squirter Size Accelerator Cam Color Main Jet Size Spring Color on Vacuum Secondaries Also tell me what altitude you are at, exhaust and intake manifold. I can do this by using the bowls and the metering block as well as the Newer quick change vacuum secondary unit many jet sizes in order to have the proper fuel curve as the power valve is equal to around 8 jets for flow. Venturi 1 1/4 and Sec. Does this have an effect afr for the back 4 cylinders vs the front 4 cylinders Would it not be best to have equal jets primary vs secondary This is Holley 600 Holley 650 (80783c) Holley 670 Stree Avenger (80670) Combination is: 350ci bored . JET SIZE (NUMBER) ORIFICE SIZE (INCHES) 65: 0. Primary Jet Size: 66 Primary Power Valve (Hg): 6. It's designed with a secondary metering plate with changeable jets, and features all aluminum components for additional weight savings. I contacted Summit, where I bought the carb, to confirm the jet sizes the caarb shipped with. Holley These carburetor sizes run the range from 600 Primary Pump Nozzle Size 28 Secondary Main Jet 72 Secondary Pump Nozzle Size 28 Ford Racing 306, air-gap, Holley 600, Mallory Maxfire, 327 grears, big 15 inch meats You can do vacuum or best idle to get started. The big thing is that you don't want to be lean, and with a Cobra, you can't hear it ping. Replies 36 Views 5K. The video explains the various jet sizes, and how they affect engine performance. 033 on the primary idle feed restrictor on the primary side and a . 048 secondary. Idle Jetting Size . Wondering if anyone out there can shed some light on jet sizes in a Holley 600 w/vacuum secondaries on a 1970 302 with 351w heads, You should get your model and serial numbers from the carb, get back to baseline power valve, jets, shooter size and stock secondary spring, and then go from there. Then 18 base + 18 mech in dist = 36 total. 5 (doesn't matter much since secondaries are either closed or WOT with 0 vacuum) Putting the pv back in and changing the jets to 3 sizes over factory didn't change a thing. That'll be your start point. You can always precision-drill the plate to change "jet" sizes. Now I'm re-assembling and I cant remember which side had which jet. How To Identify Your Holley & Demon Carburetor. 5 Primary Sq. You can buy an aftermarket plate made to accept normal jets. What smaller jet size would be good for my 350? Also, what are the benefits of reducing the jet size? thanks . Tech: 407-422-0394 . 040 to . author. 062") this is approx = to a #63 main jet. Hand choke. 055 . 5 Hg Primary Discharge No I have always had between . This is a main jet issue. Primary Jet Size: 64 Primary Power Valve (Hg): 6. The '60 has the secondary plate. Don't let the budget-friendly price fool you, the Brawler development focused on the performance you want and not the pretty box that it comes in. 4. This carb, from the factory, even with 77 primary jets, was alway lean on WOT. 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Please be aware that this is a community forum. 5 to 362. The jets are now 73 which cleaned up my high speed, non transition, cruise. The first quick pull resulted in an A/F ratio of 11. It's currently still setup factory with 78 jets 4. That’s with factory . idle is good, performance is awesome, air fuel mixtures seem right There are some formulas out there to approximate the change in main jet that would be required. 97, May 1, 2018. The carb is a 600 cfm vacuum secondary on a 289. They also give instructions on changing the jets for increased performance. The 3310-1 and later have the plate that you discribed as does the 1850 600 vac sec. A. Will be putting in a 68 primary in next couple of days to lean it out a bit. The secondary side doesn't have jets but a metering plate. We need to change the jets in my sons car. 050 at the most on the power valve channel restrictor size on any holley carb that is a 600 to My current engine runs with a 650 vacuum secondary I custom built and the power valve channel restrictor size I have in it is a . 5 now 4. Warranty. Bigger bleed/smaller jet/stock (. It is on a 10. Its a 600 cfm carb on my 65 fastback with a 289. What I find hard to believe is when you take out the power valve most books say put in a 5 - 6 size bigger jet. SHARE POST #11. Factory primary jets 78, now 78. The car seems to smell rich when it runs. The high rpm problem is just a matter of stepping up in jets. 5:1 cr. The primary metering block had a . Share (0) Be the first to review “Holley Quick Fuel Carburettor Vac Secondary 4160 390-600 Cfm Rebuild Kit” Cancel reply. This is necessary when converting the secondary metering plate to a metering Holley explains how the main jets on a four-barrel carburetor operate. I am a big believer that if you have to change the jets a lot smaller, you might as well go smaller in the carby. It is equivalent to having a model 1850 style metering block with # 65 jets. Is your power valve okay? The Holley P-S jet spread is based mainly on the primary PVCR size, everything else being equal if not using the rear PV. The carb would have come with a #73 jet (which has a . PV factory 4. 7. 044 secondary idle air bleeds. 5 power valve, white pump cam and a . Save on Holley Street Carburetor: 600 CFM, Electric Choke, 4 Barrel, Square Bore, Single Inlet, Shiny 0-80457S at Advance Auto Parts. 5-15 at cruising? 2) 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent. Vacuum. Just that "burbling" rich idle when stopped in gear. 2 mpg (Imperial) on the highway. 9 I assume I need to down size my primary jets but by how many Jet Sizes. 5 secondary power valve assy na 25r620b na na secondary vacuum spring plain purple plain plain linkage type vacuum vacuum vacuum vacuum inlet needle & Carburetor, M2008 Series, 600 cfm, Square Bore, 4-barrel, Electric Choke, Vacuum Secondary, Each See More Specifications | Check the Fit Summit Racing™ M2008 Series Carburetors SUM-M08600VS Brawler Street carburetors are machined and assembled by craftsman right here in the USA. 030 IFR's in secondary and . 025 pump squirter (w/standard 30cc pump). If your holley is the vacuum secondary 3310 manual choke version or the 80508 electric choke version then you can buy a rear metering block for it so you can have jets on the rear if it is that particular one. The car has a Holley 1850, 600 CFM carb and he's only getting 8-10 MPG. Note : Go to Holley's website and see the carb sizing graph Hell even NASCAR ONLY used a 390 cfm carb. 002 it doesn't necessarily mean it flow the same as a 2 sizes larger jet plate. Description Ref. The power valve is usually only a consideration when you are running a camshaft that seriously alters the vacuum characteristics of the motor. If you drop the jetting too much, it will be good down low, but lean out up top. two others had similar problems to Get the Best Performance with Quick Fuel BR-67270 Brawler Diecast Carburetor 600 CFM, Vacuum Secondary, Electric Choke for Select 1955-1988 Chrysler, Ford, GM, Secondary Jet Size. 033 ifr size. Just because a carb is on a built or bigger engine doesn't mean it automatically needs bigger jets. 60's. 026 idle Jet Size: Primary-86; Secondary-86 We were sure the engine would stumble and rattle at idle with the 830-cfm carburetor, but we were wrong. Have a look at a Holley (2 WB's and a Torana) and besides that when I was after info on setting up my 600 Vac. average jets in the two sizes. Save Share primary main jet 70 71 75 75 secondary main jet 78 80 81 81 primary power valve assy 8. If you change one idle mixture needle, you must change the other idle mixture needle by the same amount. I was wondering what jet sizes I should be using in my Holley 600 vacuum secondary carb? The engine is a 351 Cleveland with 2V heads, Comp 268H cam, Performer intake, headers, Crane ignition etc. Holley does a lot of testing and lower jet changes buy that % does not equal good results. Plug unused ones. I've noticed this before and while researching the old and new Holley carbs that the quoted venturi sizes of the 600 and 650 carbs seem to vary a lot Holley 1850 series 600 CFM Pri. pressure with a given test fuel. Cruise and light load I'm seeing between 13. 031 shooter size and a primary jet of 66 or 65 depending on what year it was made and the secondary metering plate is equal to a 65 size jet. These carburetors work hard just as their name implies- just raw bare knuckled performance that you can rely on. Fuel Line Included: Secondary Main Jet Size: 76. Price: Vacuum. The engine is original with factory manifolds and internals. With a Proform main body the main air bleeds might be larger which then would change the emulsification that's why it may need larger jets in the rear. Reconnect the appropriate vacuum hoses to the carburetor, noting the correct port from Figure 5 and 6. Primary Discharge Nozzle Size: 0. I'm rebuilding a Holley 4160, List 3310-2 vacuum secondary carb that has been on my 75 jet boat for the last ~20 years. There is always a 6 to 10 size difference in jetting between primary and secondary since the secondary side does not have a power valve. Venturi 1 5/16 with Most factory Holley jetting has bigger jets for the secondary's vs the primary. Factory secondary jets 82, now 85. Eric F;. It will have the secondary changeable jet block. 5 to 1 Small Block Chevy (350 cubic inch) with a 302 duration 480 lift hydraulic cam (Fireball 2) pretty ported #186 casting number heads, 2. Email Us . You also need a vac adv for street use. BigRodney. 074 primary idle air bleeds and . carb. That said, of the two 600s I've had, one had size 64 jets stock and one had size 65. 74. . com 199R8179-1 Revision Date: 9-18-14 . 89's in the sec are pretty large but what matters is the fuel ring on the spark plugs at their base what the A/F ratio is at The 4160 vacuum sec. 66 ranges from 368. All Slayer Series carburetors Holley Vacuum Secondary (reco) Showing 1–9 of 30 results Holley Vacuum Secondary (reco) 600 CFM Auto Choke Carburettor RH600A Holley Plugs, Jet Ex, Screws & Tools; Holey Tuning Parts - Jets, Springs, etc; Carburettor Rebuild Kits. yup, I'd leave the jetting alone. Just leave that. 1980, 4150, 427, The size of the jets within your Holley carburetor will control the flow of fuel from the fuel bowl to the combustion chamber. (since Holley jets are not the actual size stamped on the jet, i. Iv'e got the holley carb manual. your not accelerating hard and the pump system is not a issue. 010" increase in restriction size. The engine is in a '71 Torino. 025 Secondary Sq. To get a 1 stage leaner secondary jet drill a 1/16" extra hole (. HOL-26-57. However, part # 0-6299-1 (4160 ) 390 cfm primary jet part #122-50 which is a . First off, do not "tune" the idle to a specific Knowing the list number on the carb will help as Holley made no fewer than two dozen different 600 cfm Holleys and they are all for specific applications. Use the manifold vacuum port for your distributor. For reference: The factory Chevy LT-1 350 had a holley 780 carb jetted 70 primary/77 secondary with an 8. They also hold their shine longer. 5 PV)-Holley 300-36 (Hi-rise Z/28 type dual plane)-blocked exhaust riser ports in intake gaskets 68 main jets (secondary has no jets). white pump cam in #1 position. Big venturi bores on an engine that is smaller moves are more slowly. Also buickb4 to give a comparison on a holley brand 600cfm vacuum secondary 1850(manual choke) 80457(electric choke) carb it comes with a . Buy online, pick up in-store in 30 minutes. Some Boss 302 guys run 71/82 jets with a 6. If you're correct, and it has 65/68s stock, going up seven sizes on the primary (which is already too rich) and a dozen on the secondary is just crazy overkill. 0 AFR, which I am fine with. Ron Meyer 67 Mustang coupe (302,Windsor jr heads,T-5 5spd,3. Secondary Type. An example might be 3 main jet sizes smaller for a . The idle air bleeds are . This is on a 355 SBC with a 3310 Holley. Replace any cracked or dry rotted hoses at this time to prevent any vacuum leaks. A bigger engine will often need smaller jets, because it "pulls" harder on the airflow thus pulling more fuel through the jet. I'm looking at using smaller jets and a stiffer spring to give him better gas mileage. 052 . C3 Tech/Performance - Holley main jet size advice needed - I am running 650 cfm Holley 4165 LIST 6210-3 spreadbore double-pumper on the L48. increase in altitude. They confirmed that the PRimaries were 51, but that there was nothing listed for Secondary jet sizes(?). Intake: Edelbrock EPS, Quick Fuel Brawler 650 dp. 1. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you It's a Vac secondary holley 850 list# 80531. 0975 ) secondaries. Primary Jet Size: 66. Do you have a #79 jet in the secondary or a jet that measures . Find Holley Carburetors 600 CFM, Vacuum Secondary Type and get Free Shipping on Orders Over $109 at Summit Racing! Street Warrior, 600 cfm, 4-barrel, Square Bore, Electric Choke, Vacuum Secondaries, Single Inlet, Shiny Finish, Ford Kickdown, Each. 5 power valve. Fuel Inlet: Single. No. Although Holley employees will take part in answering questions from time to time, Your carb is 600 vacuum secondary, has 65 primary main, there's a chart with metering plate specs in relation to jet sizing. Would you tell me the size of the jets on 4160 Holley and which size give me good If its a holley 1850 or 80457 and is the 600cfm vacuum secondary then it comes stock with a 65 primary jet and that is the carb I have used for many years on my mild 350 small block chevy builds and OK that is a newer style 600 cfm Holley. street carb: 0-1850S: Summit Racing: $301. . fitted You will probably want to go prety small in jet size. Street and occasional strip 64 Dodge B body. Primary Main Jet 68 Primary Power Valve 6. Attach a vacuum gauge to a manifold vacuum port on the throttle body. Part #: 080457S Number Of Vacuum Ports: 4. Correct jet sizes for Speed Demon 750 VS. Otherwise I reckon one of the Holley, Rochester or When I ran the Holley 650 the "gospel" was 68 primary 72 secondary. 0 To What Size Jets for Holley Carb? Subscribe Reply Subscribe . I was wondering what size jets come stock on a 750 vac sec? Also, what jets come stock on a 750 DP? Thanks Sean . My question is, what jet size would be good to try, if I want to get my light One 600 may need different jet sizes than another 600. 080” diameter hole in it). high rpm full throttle: 0. 5-11 throughout the entire rpm range. That's only your idle mixture screws. #82750SA. 067"), and you can almost count on having to drop 3-4 (if not more) main jet sizes with annular boosters vs. Tom PRIMARY METERING JET SECONDARY METERING PLATE PUMP DISCHARGE NOZZLE PRIMARY POWER VALVE SECONDARY DIAPHRAGM SPRING 0-80457S ***** You go half of the VAC for the Power valve size. 351. 5 power valves front and back, #72 primary jets, #76 secondary jets. All the same features with about 40% less weight. 079"? If you have a #79 jet in there then that is why it is rich. 02's, 1. After the new jets I installed new plugs so I can read them, and they are on the white side, which I understand is lean, so I guess I need to go the other way. Holley has been the world leader in carburetors for over 100 years. 3 a few years back, ran The QFT metering plate is handy for main jet change, but just check the sizing of the idle constant feed jet in I've fitted a new vacuum secondary 600cfm Holley on my '73-'76 350. 10 geared L78 and the stock 4346 780 Holley and headers, I run 6. Most Holley 650's are like 68-70 pri jet and 76 sec jet, but this is with the pressed in air bleeds. icwgg nydxh yzcti noas udcwhf aexkt tbly ysws iecp zws