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Holley 4160 Stock Jet Size

Originally, the my 4160 came with a power valve calibrated to activate at 6. if you have a 28, go to a 31, etc. The previous owner had it jetted very rich but it still bogged like it had a bad accelerator pump. Holley jets range in size from 40 to 99, with the stock jet size differing based on the carburetor model and engine application. can any one recommended jet sizes for a 600 holley, fitted to a mildly cammed 289. The Power Valve circuit needs to have its flow increased also to bring the primary up to about 35% at WOT. If you had a carb which has a stock jet size of 80 and you live or race at 2000 feet above sea level, then you would use a #79 Holley jet in the carb. The stock carburetor was replaced with a holley 750, and the jets were taken from #64 down to a pair of #55's on the front bowl. This carb is a Q-jet replacement, with 6 vacuum ports, electric choke and. Final warranty determination will be in the sole discretion of Holley. I set the timing on the car (seemed to run okay with about 10-12 degrees initial) and took it for a run. Holley explains how the main jets on a four-barrel carburetor operate. Holley carbs are calibrated for sea level operation and an inlet air temperature of 70 degrees Fahrenheit. On my 650 carbs I'm running 68 jets all around on both carbs using the jet plate in Secondary side. that would make it rich at idle and above. Browse our large assortment of 5 Carburetor available for purchase today. Killer Prices. Used on Holley carburetor Models 4150 and 4160. Feet) and my set up for my stock 302 is 61 jets on my 2bbl 350 cfm holley.



It comes with a manual choke and universal jets, power valve, and non-adjustable (without an additional kit) vacuum secondaries. (the P/V is screwed in on the back side) Putting it back together 1) There are 2 different types of P/V gaskets use the one w/ the new P/V snug it down but not tite. I have a modded 302, with a 600 cfm holley 4160,and just wanted to know what size anyone would suggest, or just what sizes other people were using. The chart below compares Holley jet sizes to fractional turns of the Adjust-a-Jet valve: Percy's Adjust-a-Jet, Holley 4150/4160 with circle track secondary. All Holley Main Jets are flow tested and then stamped with the correct number. List Numbers and Stock Jetting One of the things we noticed over the years is the lack of information concerning Holley List numbers and the specifications for individual carburetors and their stock jetting. Holley #0-80457-1 Carburetor, 4160, 600 cfm, Square Bore, 4-Barrel, Vacuum, Single Inlet, Electric Choke Features: * Vacuum secondaries allow use on wide variety of vehicles * Electric choke * Single feed fuel inlet * Calibrated for excellent street performance * Ford A/T kickdown, does not work with A. LIST # CFM STOCK JETTING POWER VALVE TYPE. Anyone planning on serious performance tuning needs the Holley Jet Kit. but that's a drag race deal. it is smooth,but I think it is over fueling on the secondary's. Holley 4150G carburetors have a governor diaphragm assembly on the passenger side and were used on trucks. 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. Get deals on automotive parts, truck parts and more. These jets have 1/4"-32 UNF thread and they are offered in a wide variety of hole sizes to allow fine tuning of your specific application. Each Holley power valve is stamped with a number to indicate its vacuum opening point.



Holley 1946 Carburetor List R8111 1980-1981 Ford Cars 200 Engine. can any one recommended jet sizes for a 600 holley, fitted to a mildly cammed 289. 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. The Holley 4160 has no secondary metering block, so it uses a shorter transfer tube from the front float bowl to the rear. 079" Jet size; Standard Main Jet; Jet Hole sizes provided for reference only. I avoid the AFB-style carbs like the Edelbrock 1404 or 1406- good for general purpose or mild cruising, but will starve for fuel in hard turns because of the side bowl design. Carburetor Jet Holley Performance 122-77 Standard Main Jet - 1/4-32 UNF Thread - Hole Size 0. or if a Double Pumper Notice that the L-88 Holley List Number is "Later / Higher" than the CR 302, but buy only 1 digit !. Info such as Jet size, Power Valve, CFM etc. The carburetor identification number on the HP series are stamped into the linkage side of the main body. 40 Pack Holley Carburetor Main Jets Sizes 50-109 14-32 4150 4160 4500. 031 Accelerator pump nozzles. All Holley marine 4160's were either 500 or 600 cfm. All Holley jets are sized by actual flow and may vary slightly from the sizes listed. it is smooth,but I think it is over fueling on the secondary's. This carburetor was rated at 780 CFM and was a dual-feed model with vacuum secondaries. holley 4160 manual choke kit of based & in a size knitting tension is based.



We've searched all over a curated variety of listings in stock now on the web. I had the stock intake with two barrel until recently when I changed to a Summit Stage 1 intake which is described as a stock replacement for a four barrel car, and a Holley 4150 600cfm carb. 08” flattop. list # cfm stock jetting power valve type. I avoid the AFB-style carbs like the Edelbrock 1404 or 1406- good for general purpose or mild cruising, but will starve for fuel in hard turns because of the side bowl design. Both the jets and the metering rods are numbered for easy identification. These packages of components include quick reference guides for selection of the application and easy identification. Holley 0-80457S Model 4160 600 CFM Square Flange 4-Barrel Vacuum Secondary. Track-tune your Holley carburetor like a pro with the Holley Jet Assortment Kit; Kit contains 2 units of 36 different jet sizes ranging in size from #64 - #99; Selected jets provide the broadest range of adjustment and tuning for most performance carburetor applications; Fits Holley models 2100, 2300, 4010, 4011, 4150, 4160 and 4500. 100 Pack Holley Carburetor Main Jets Sizes 50-109 14-32 4150 4160 4500. 037” squirter size, a 50cc "REO" pump may also be required, available under Holley P/N 20-11. The jets are contained in a plastic case that is designed to keep them separated and make them easily accessible. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Most of these carbs feature vacuum secondaries 141951675487 HOLLEY 4160 SERIES 750 Cfm 4 Bbl Carburetor Vac Sec Sq Bore Alloy Ho0-80459Sa - $710. The Q-jet small primary bores offered better response and fuel economy in acting like a small 2 barrel carb for normal use and faster airflow and optimum throttle opening than a 4 bbl carb with same-size bores. 3) Replace the power valve. Holley carburetors have powered every nascar sprint cup team and nearly nhra pro-stock champion for four decades. Feet) and my set up for my stock 302 is 61 jets on my 2bbl 350 cfm holley. The previous owner had it jetted very rich but it still bogged like it had a bad accelerator pump.



For Carbed engines, you need to up the size of the jets to flow about 20% more for the primary, and 35% more for the secondarys, and tune from there. This kit consists of (2) each of (36) different jet sizes, ranging from #64 to #99, selected to give. Featuring barrel carburetor in stock and ready to ship today online. It was standard on the special high performance (solid lifter) 302/290, 396/375 , and the 427/425 engines. They make more power this way, at the detriment of gas mileage. 122-88, 12288, Standard Main Jet, 1/4-32 Thread,. All Holley Main Jets are flow tested and then stamped with the correct number Holley has been the undisputed leader in fuel systems for over 100 years. Holley - $2,250. Pro-Jection and Pro-Jection MPI fuel injection systems shine a whole new light on fuel management. MAIN JETS SIZES 50-109 1/4"-32 4150 4160 4500. Specialty OE Muscle Car 4 Barrels Carburetor by Holley®. A typical Holley carburetor has two screw-in jets that meter the amount of fuel that flows to each primary venturi. 5 power valve. Vacuum Secondary, Single Inlet. As to the question about whether or not the carb will be too rich with stock jetting, bear in mind Holley jets the carb based on several factors, one of them being booster type. 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. Only so much air can flow through the venturis, with appropriate fuel to match.



The correct carburetor should be a Holley 4160 or an Autolite 4100. if you have a 28, go to a 31, etc. on the 4150 carb I take the back pv out and up the jet size 8 to 10. Note: Jet hole sizes provided below are for reference only. Originally, the my 4160 came with a power valve calibrated to activate at 6. For maximum economy, drop the jet size until the car develops a slight stumble upon acceleration, then go. I now need opinions about 2 specific Holley carbs I'm looking at. The Holley 600 CFM 4-Barrel 4160 Series Carburetor is calibrated for all-out street performance, and this makes it one of the preferred choice to replace the stock carb on your Ford. JET Model 4160 Stage 2 Carburetors have all been dissembled and inspected to ensure a proper size of the idle, transition, acceleration, and main metering circuits. Are the jets bigger on the 4010 enabling better idling and hole shot? Anyone got a suggestion for what size primary jets I should install in the 4160. Holley 4160 carburetors use a metering plate on the secondary circuit that has precisely-sized holes to meter the fuel feeding the rear of the carb. All Holley jets are sized by actual flow and may vary from sizes above. Baseline the carb to stock specs and it should be close, within 5 jet sizes of optimal. Although rarely necessary, the bigger pump can be installed on a 4150-style carb by using Holley's conversion kit (PN 20-11). Carburetor Troubleshooting Guide. Buy Carburetor, Carb Jet Assortment Kit, Holley [R] - BK 3353412 online from NAPA Auto Parts Stores. BIG- 10270 Holley Carb Carbuerator Jet Kit Size 64-99 2 Of Each Size 2300 4150 4160 4500 AED QFT Quick Fuel.



one basic size with. it is not a complete list of all carbs made by holley over the years. it has stock 622(holley 62) primary jets and thinking since they are cheap to go up a few sizes to like a 64-65 71 Dodge Demon Green/Blk big turbo slant 6 in progress 83 GT Red/Blk HCI 306/ 3550/ 4. Find great deals on eBay for holley jets. This kit comes with It a #63 primary jet size, and a secondary jet size of #73. can any one recommended jet sizes for a 600 holley, fitted to a mildly cammed 289. Holley Jet # 104 Replaces Holley part # 122-104 Orifice Size:. Highlighting our full selection of Holley Carb Carburetor Gas in stock on the internet. My car has a Holley 4160 carb (1850-3' 600 cfm) and I would like to know what primary jet I should be running. For every 2000 foot increase in altitude, you can reduce the jet size by one size. If its a 600 holley you could jump up to say a stock 1850 jet of 64 or 66 or simply keep adding jet size till it starts darkening up the plugs a touch. When I get up there I re adjust my fuel mix screws. These jets have 1/4"-32 UNF thread and they are offered in a wide variety of hole sizes to allow fine tuning of your specific application. If you have an automatic transmission you will need a vacuum sec. -----99TransAm/Stock and a blast to drive 97K1500SportSide/Ext.



BIG- 10270 Holley Carb Carbuerator Jet Kit Size 64-99 2 Of Each Size 2300 4150 4160 4500 AED QFT Quick Fuel. Holley #0-80457-1 Carburetor, 4160, 600 cfm, Square Bore, 4-Barrel, Vacuum, Single Inlet, Electric Choke Features: * Vacuum secondaries allow use on wide variety of vehicles * Electric choke * Single feed fuel inlet * Calibrated for excellent street performance * Ford A/T kickdown, does not work with A. 351 4V Cleveland (351C) in a 1965 Mustang (Yes, that is right) with a lumpy roller cam and single plane Edelbrock intake with a Holley 4777-5 double pumper 650 carburetor. (the P/V is screwed in on the back side) Putting it back together 1) There are 2 different types of P/V gaskets use the one w/ the new P/V snug it down but not tite. For all carburetor models 2300, 4150, and 4160 with choke hardware mounting bosses on side of main body 35. But now I see the main jets are 74's? Holley site says in specs they should be 68's. I know this might be a bit vague. can any body tell me what jet's I should have in the primary and secondary's ? It seem's to be ok on primary's, but it is bogging down when the secondary's are coming in. Sometimes you can improve performance slightly by stepping up or down one or two jet sizes. 1850-3 600 (F)66,(R)plate 134-9 6. Jet Sizing Question I'm running 64 primary jets in my 600 vacuum 4bbl, and my light cruise AFR is in the 12. hoping in a holley 4160 manual choke kit change reserves based. All Holley jets are sized by actual flow and may vary from sizes above. All Holley main jets are flow tested and then stamped with the correct number. Street carbs and performance carbs of the same cfm rating will be jetted differently, too, so you can't always use the jet rating for different. Hg, "85" indicates 8. This product is made of high-quality materials to sere you for years to come.



This shortcoming can be partly offset by increasing the size of the venturis; however, other problems arise in lower RPM street use, such as poor mixture, spark plug fouling, poor throttle response, and poor mileage. 5 power valve. Removal and installation is as easy as screwing them in or out with a flat-blade screwdriver. I believe Holley jet these carbs on the lean side for gas mileage. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Designed using state-of-the-art technology and with customers in mind. The main body uses a radiused air entry. For about $40, you'll save a lot of trips to the speed shop, time, money and effort by having a full line of main jets on hand. I know it's going to take some playing with to get just right but I can't even find anything to give me an idea of what till get me close for jet size and power valves on my Holley 390 carb. Plug any fittings not used. This kit comes with It a #63 primary jet size, and a secondary jet size of #73. (the P/V is screwed in on the back side) Putting it back together 1) There are 2 different types of P/V gaskets use the one w/ the new P/V snug it down but not tite. it is not a complete list of all carbs made by holley over the years. Service replacement for 1967 L34 w/o A. GM/Rochester chose the spreadbore pattern so to limit the number of various carb sizes it would need to produce. '69 350/350 conv. 8 jet sizes up from the stock jetting on a 4-bbl generally, but it varies as Holley carbs are generic castings with custom variations for some versions. I have a 4160 series Holley on my ski boat with a mid mounted 308. On Dominator-style carbs, the pump capacity is 50 cc for ten strokes. All Holley Main Jets are flow tested and then stamped with the correct number.



i'm thinking of installing a metering block on the seconday side of my holley 660's and also converting to dual feed bowls. Holley primary jet size Bronco Tech My 4160 had #69 jets in it stock. Most likely with a 4160 you have a secondary metering plate = non-adjustable. Just remember to add the appropriate size jets to the metering block. Race-ready right out of the box! For amazing response from an affordable production carburetor, your search stops here. Holley 1946 Carburetor List R8111 1980-1981 Ford Cars 200 Engine. Holley 4175 Idle Circuit Problem. A little research later and I found it was a carb built for Chrysler by Holley and is stamped "LIST 6160-1". MAIN JETS SIZES 50-109 1/4"-32 4150 4160 4500. matching tops or & in a holley 4160. 5 inches but a 350 carb on the same engine will frequently see 5 to 8 inches. They also give instructions on changing the jets for increased performance. Feet) and my set up for my stock 302 is 61 jets on my 2bbl 350 cfm holley. 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. Find great deals on eBay for holley jets. Holley I'm currently running 750 Edelbrocks on my SBC strokers.



But the real question is is WHY ARE YOU GOING TO RUN A VORTECH ENCLOSURE, ditch it and get a EV hat or comparable. 302 bored 0. My car has a Holley 4160 carb (1850-3' 600 cfm) and I would like to know what primary jet I should be running. 99 Holley 0-80508sa 750cfm Aluminum Vacuum Secondary Carb Factory Refurbished 4bbl. I contacted Summit, where I bought the carb, to confirm the jet sizes the caarb shipped with. Will also hold down the base plate of a cold air scoop. Holley's model 4160 four barrel carburetors provide maximum performance on street and mild race vehicles. The video explains the various jet sizes, and how. Holley® has been manufacturing fuel systems of all shapes and sizes since 1903. My suggestion for initial carburetor settings in the Holley 390, 4160 series is as follows: Stock accelerator pump (NOT the 50cc). Holley - $2,250. Shop with confidence. once I had the holley set up it performed. Service replacement for 1967 L34 w/o A. According to my 1957 Ford Car & Thunderbird Show Manual the stock 4150 carb had 55 primary jets, 48 secondary jets, and a 6. When I get up there I re adjust my fuel mix screws. All Holley Main Jets are flow tested and then stamped with the correct number Holley has been the undisputed leader in fuel systems for over 100 years. Pro-Jection and Pro-Jection MPI fuel injection systems shine a whole new light on fuel management. The previous owner jetted up to #69 jets. Holley 4-barrel carburetor dated 2853 - 285=October, 3=1973.



Holley 4150 carburetors Holley 4160 carburetors Holley 4165 carburetors Holley 4180, 4190 carburetors Holley 4500 carburetors. Holley 4160 (80508) 750 cmf jetting Hi Guy's I have a SBC 383 with a holley 3310 sat on a torker 2 intake. Once you know the correct stock jetting for your particular Holley carb, you can determine whether you live or race at an altitude above sea level. For Carbed engines, you need to up the size of the jets to flow about 20% more for the primary, and 35% more for the secondarys, and tune from there. For all carburetor models 2300, 4150, and 4160 with choke hardware mounting bosses on side of main body 35. With this in mind, your carb/cam will need 2-3 sizes bigger jets on the primaries. 1850-3 600 (F)66,(R)plate 134-9 6. Holley 3310C/4160/750 cfm Manual Choke/Dual Feed CarburetorRetail @ $295. For about $40, you'll save a lot of trips to the speed shop, time, money and effort by having a full line of main jets on hand. At 7 inches of vacuum the 350 carb is really flowing about 430-440 cfm. reducing the size of the emulsion jet adds. Primary (front of carburetor) jets are your primary tuning jets for cruising and low throttle use. These jets have 1/4"-32 UNF thread and they are offered in a wide variety of hole sizes to allow fine tuning of your specific application. The second is a 4150, 770 cfm, street avenger, model # 0-80770, vacuum sec. The WOT fuel volume from jet A vs. I avoid the AFB-style carbs like the Edelbrock 1404 or 1406- good for general purpose or mild cruising, but will starve for fuel in hard turns because of the side bowl design. Are the jets bigger on the 4010 enabling better idling and hole shot? Anyone got a suggestion for what size primary jets I should install in the 4160.



I set the timing on the car (seemed to run okay with about 10-12 degrees initial) and took it for a run. Most of these carbs feature vacuum secondaries 141951675487 HOLLEY 4160 SERIES 750 Cfm 4 Bbl Carburetor Vac Sec Sq Bore Alloy Ho0-80459Sa - $710. Used to tailor air fuel ratio. Nozzle Size or Spring Color Primary Bowl Gasket Primary Metering Block Gasket Secondary Bowl Gasket Secondary Metering Block Gasket Secondary Metering Plate Gasket Primary Fuel Bowl Secondary Fuel Bowl Throttle Body & Shaft Assembly Venturii Diameter Primary Venturii Diameter Secondary Throttle Bore Diameter Primary Throttle Bore Diameter Secondary R1848-1 4160. All Holley jets are sized by actual flow and may vary from sizes above. I believe Holley jet these carbs on the lean side for gas mileage. " Yet fails to provide GM No. Get deals on automotive parts, truck parts and more. Carburetor Jet Holley Performance 122-60 Standard Main Jet - 1/4-32 UNF Thread - Hole Size 0. MAIN JETS SIZES 50-109 1/4"-32 4150 4160 4500. Hg, "85" indicates 8. 5 that should be Ok for a stock cam. Note: Jet Hole sizes provided for reference only. For every 2000 foot increase in altitude, you can reduce the jet size by one size. 2 barrel carbs are rated at 3 inches of vacuum and 4 bbl carbs are rated at 1. can any body tell me what jet's I should have in the primary and secondary's ? It seem's to be ok on primary's, but it is bogging down when the secondary's are coming in. Go up 1 pilot/slow jet at a time, don't skip sizes. that would make it rich at idle and above.



The aluminum construction results in a product that is 40 percent lighter than Holley's other carburetors that are constructed from zinc. Most of these carbs feature vacuum secondaries 141951675487 HOLLEY 4160 SERIES 750 Cfm 4 Bbl Carburetor Vac Sec Sq Bore Alloy Ho0-80459Sa - $710. No, the 600 will not flood a stock 305. 4150 / 4160. Holley four-barrel carburetors first appeared on the Corvette in 1964. These jets have 1/4"-32 UNF thread and they are offered in a wide variety of hole sizes to allow fine tuning of your specific application. The stock accelerator pump on a 4150-style carb has a capacity of 30 cc for ten strokes of the pump. The main body uses a radiused air entry. Jet Sizing Question I'm running 64 primary jets in my 600 vacuum 4bbl, and my light cruise AFR is in the 12. 4150 carb types use a rear metering block with jets similar to the front metering blocks. the metering plate is the secondary side of the carb that acts like the jets in the proimary side of the carb and 134-9 translates to a #53 jet size in the rear. The 4160 used is an end-inlet carburetor, while the 4150 carburetors used have been both end and center-inlet designs. My questions are: 1. Anyway, I've been wanting to add a 4-barrel carb to the Mustang and a friend gave me a model 4160 Holley that he had lying around. plugs look a little sooty but thats after idling a little. Tunable to provide the ultimate in performance. Dodge Trucks from 1969-'73 with a 413 engine used Holley list numbers R-6279 and R-6495. Holley 36-181 - Holley Gasoline Carburetor Jet Kits They consist of two each of 36 different jet sizes, ranging from size #64 to #99.



Wanted to ask a question about Holley idle air bleeds. All Holley marine 4160's were either 500 or 600 cfm. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. You jet to engine fuel requirements and the primary limiter is the size of the carb. 40 Pack Holley Carburetor Main Jets Sizes 50-109 14-32 4150 4160 4500 50 Pack Browse By Price Priced Under $89 :: Priced Under $116 :: Priced Under $204 :: Priced Under $442 :: Priced Under $506 :: Priced Under $969 :: Priced Under $1429 :: Priced Under $1748 :: Priced Under $2319 :: Priced Under $3821 Sort Orders Product Matcher :: End Time :: Low To High Prices :: Most Expensive :: New Addition. It would help me to know the original jet sizes, accelerator pump nozzle sizes and power valve ratings. 300 cfm can probably work but may not give you much more performance than a stock Quadrajet. Only so much air can flow through the venturis, with appropriate fuel to match. Killer Prices. Holley Performance, Carburetor Jet, 122-45, Standard Main Jet - 1/4-32 UNF Thread Hole Size 0. Holley sizes the jets and air bleeds on these carbs so that they run on the rich side at cruise speeds. Product Description. 99 Quick Fuel Technology 36-436qft Carburetor Main Jet Assortment Gas Jets 75-110. All products on the Butler Auto Mart website are available for quantity ordering. A little research later and I found it was a carb built for Chrysler by Holley and is stamped "LIST 6160-1". Holley carbs are calibrated for sea level operation and an inlet air temperature of 70 degrees Fahrenheit. "75" indicates 7. I am using a Holley 650 4-barrel (Model 4175, 80555S) on my 1984 305cid LG4. Presenting Carb Bbc in stock and ready for shipping now online.



MAIN JETS SIZES 50-109 1/4"-32 4150 4160 4500. Also is a stock replacement for Rochester. FORD and MUSTANG Holley 4150 Carburetors C3AE-B list 2668 427, C3AF-BE list 3255 65 Ford Full Size 427, C3AF-BV list 3255-1 66 - 67 Ford Full Size 427, C5AF-BV list 3255-1 66 - 67 Fairlane 427, C6OE-N list 3557 66 Fairlane / Comet 390, C6OE-M list 3530 66 Fairlane / Comet 390, C7OF-A list 3793 67 Mustang 390, C7OF-B list 3794 67 Mustang 390, C7OF-C. According to my 1957 Ford Car & Thunderbird Show Manual the stock 4150 carb had 55 primary jets, 48 secondary jets, and a 6. The vacuum secondary helps heavy vehicles with automatic transmission performance, street gearing, and engines built for low-end horsepower. That's were all the Ford Y block discussions get the most action. Fits all Holley Model 2010, 2300, 4010, 4011, 4150, 4160 and 4500. Forgot to check the numbers on the current jets, another project for tomorrow. For a stock motor, nothing more than a stock type carburetor is necessary. A little research later and I found it was a carb built for Chrysler by Holley and is stamped "LIST 6160-1". The later (after 1963) Motorcraft 2100 & 4100 use this jet. Orginally when I put the performer on, I used the orginal Q jet, then went to the 600(?? that was 20 yrs ago) holley spread bore. Track-tune your Holley carburetor like a pro with the Holley Jet Assortment Kit; Kit contains 2 units of 36 different jet sizes ranging in size from #64 - #99; Selected jets provide the broadest range of adjustment and tuning for most performance carburetor applications; Fits Holley models 2100, 2300, 4010, 4011, 4150, 4160 and 4500. For example, the 0-3310-5 4160 750 carburetor comes stock with a PN 134-21 secondary metering plate that is equivalent to a 75. Holley Carburetor Numerical Listings Carb. Holley 4160 Stock Jet Size.

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