602 crate carb jets The Thick (Approx 1") Carb Spacer is best for Carbs that have Jets over 70. He builds for both gasoline and alcohol burning engines. 96. 4 days ago · “It calls for electronic fuel injection [EFI], which is computer-tuned through oxygen sensors. These are used parts, not new from a race engine. 1. This is your single biggest issue with the carburetor. Tuning Tips for your 650 Carburetor. This carburetor is calibrated for Ethanol E-85 fuel. Because of the high heat I have been thinking of a 4777 style carb with the straight leg boosters. 4BBL HP Body; 750 Base Plate; Gasoline; For GM 602 Crate Engines. My thought is the 650CFM - 602 Carburetor by David Smith Carburetors. 518-937-6243 or 518-469-2932. 25X1. Rutherfordton, NC 28139 United States of America Order Line: 828-395-2113 Info Line: 828-468-1160. Share More sharing options Followers 0. Willy's Carburetor & Dyno Shop GM 602 Crate Engine Carburetors. Hope this helps out. and 113 Sep 26, 2011 · A lot of series, ASA in particular, mandate that carb for their crate engines and they have to be gauge legal, using a down leg booster isn't allowed. 2. Thanks, Strays. Float Level – The aluminum bowl with the sight glass of the 80541-3 carburetor requires the float to be set with the fuel line across the center of the glass. (The fuel level for the 80541-1 JET ROCHESTER 2G CARBURETOR. Aug 3, 2015 · I have been thinking about a carb for chevy's 602 crate engine. A DIRT Sportsman crate is not the same as an asphalt Pro Late Model crate; and a 602 crate is not the same as a 603 or 604 or 525 or 347. Your Cart Mar 24, 2020 · Used in racing series such as the Durrence Layne Racing Series, the RUSH Racing Series, the South Eastern Crate Association, the Fuel Racing Series, Crate USA, and Fast Track, there are a number of ways engine builders can participate in a crate engine program. 602 Crate Engine Quick Change rear end = 2525 lbs. Problems Identified. I have seen some 602 crate engine carbs that run the new ultra HP main body with down leg boosters. With the carb leaned out, Tyler made another ten passes, and the 602 stopped fluttering but delivered the same results – pass-after-pass – of 98 ft-lbs. 2 No polishing or grinding permitted. More magic to the floats, needle,seats and accelerator pump, new jets and I just did a carb and distributor + treated stock GM Valve Springsfor a guy in NY and his fuel is Environment Friendly VP98 for a GM 602 Crate. Rutherfordton, NC 28139 United States of America Order Line: 828-395-2113 Info Line: 828-468-1160 Finally a GM 602 crate motor carburetor that wont break the bank! Speedway Motors has teamed up with AED Competition to bring you an affordable GM 602 crate carb that out performs the most expensive carburetors on the market. Legal Sales price: $1,399. Most of the plugs were way fouled. Based on GM This carburetor also features Willy’s externally adjustable metering blocks that allow jet changes with a flick of the wrist. Carburetor Main Jets. Each carburetor is dyno tested and tuned specifically for the GM 604 Crate engine’s high vacuum camshaft profile. (ie 0-4777-2) Those 6 carbs use 2 different primary jets and two secondary jets. With the increasing popularity of classes that require a sealed “602” motor, the demand for power through bolt-on parts has kept pace. Part Number: WCD-WCD80541-E85 Not Yet Reviewed Speedway Motors Racing Engines. The tuned GM 602 crate engine is used primarily in dirt late models and modifieds. 375 - 750 cfm - good on 350-383 limited style engines. Engines can be bored . Rutherfordton, NC 28139 United States of America Order Line: 828-395-2113 Info Line: 828-468-1160 There's nothing more important to make horsepower in your Crate Engine than your Carburetor. It is made from a Kevlar-like Polymer that keeps your carb cooler at the end of the race and has a special cut to atomize the fuel faster. Our KillerCrate Carb spacers are proven winners. Air blow dry. Carb is a Holley 650 HP, mechanical secondaries. Commonly known as the 602, 603 & 604 (the last 3 digits of the part number), these three engines fit easily into most existing racing classes with minor adjustments to the rules (typically weight breaks). Read More. $1,148. We had a chance to talk with Steve Hendren and ask him for his view on some of the current issues circulating around Crate engines. Dec 10, 2024 · Re: 602 Crate carb Post by Walter R. Malik » Tue Dec 10, 2024 7:52 pm A carb on alcohol will exhibit less air flow than on gasoline simply because it is using about twice the amount of fuel which takes-up more space so, there will be less mass air for the same size carb. So, If you decide to do away with the power valve, you must increase the main jet sizes considerably (typically 6 – 10 jet Dec 11, 2012 · And that's a big deal with a 602 or a 604 crate because they are all the same, so even a seven horsepower advantage is going to be significant on the racetrack. 00 WILLY'S GM 604 CRATE CARBURETOR. 5 power valve. 36V x 1. The 602 crate engine must run 92 octane fuel through a Holley 80541-1 650cfm 4bbl carb, with only the same mods allowed as the 2bbls, and are limited to stock HEI they come from GM with. Rutherfordton, NC 28139 United States of America Order Line: 828-395-2113 Shop Carburetor Main Jets and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. | #9105002. Jan 9, 2006 · It is a close tolerance jet that is supposedly tested to ensure there is no flow variation between jets. This article shows you how to adjust the air fuel mixture and the idle air speed - the two most common adjustments made when tuning a carburetor. I assume they were used in emissions carbs for more accurate flow control. Willy's GM 602 crate engine carburetors provide the performance you need when it counts. Running electronic ignition and the quadra jet carb. Shop Race-1 604 Hot Crate Parts Shop All » Engines; Valve Springs Chevy crate engines. Fuel Type JET PERFORMANCE PRODUCTS; For GM 602 Crate Engines. We'll even provide some setup tips. Carburetor Caps. Willy's Equalizer 602 Carburetor. A 4150-style racing carb, such as these crate engine carburetors are a great option. I changed the jets to 75 (local carburetor expert agreed and supported the change) Changed timing from 38 to 32. If you want to run up front 602 Crate Carburetors. For four-barrel carburetor classes, a 650-cfm carburetor works best according to GM’s 604 setup documentation. We offer crate carburetors for the “602” motors built on the 80541 650 HP and the 4777 650 platform. Note: Sold AS-IS. Built engine: 9-1 Compression 361 CI Limit No big bore/short stroke These jets are the tiny openings inside the carburetor that introduce fuel into the air rushing into the engine. 95. 12-19. Rutherfordton, NC 28139 United States of America Order Line: 828-395-2113 • External adjustable metering blocks that allow quick jet changes • Gloss black coating that protects the carb from the effects of the fuel • Each carburetor is dyno tested and tuned specifically for the GM 604 crate engine high vacuum camshaft profile . Jan 23, 2025 · We have a used Willy’s 650 CFM Holley Carburetor Sportsman 602-604 Crate Engine in Mint Condition. 99 WILLY'S GM 602 CRATE CARBURETOR. 1 Holley 4-brl carburetor is permitted on IMCA sealed 602 crate engines. 602 Engines must run 6200 RPM Chip, and be on race gas. Main St. 69 STI 2C DCB T3A; 4760 Series - 604 Crate 1. Must maintain left side weight at all times. Once the idle mixture and primary jets are dialed in, the secondary jets are next on the list. The choke horn may be removed by square milling. 250-604 crate . 250-602 crate (IMCA legal) Race-1 offers competitive pricing on Chevrolet Performance 602, 604 & 525 sealed circle track racing engines. It comes with gaskets and instructions. Next up is running the right carburetor. GM Crates 602 with seal. This engine would be a good option for those that race in unsanctioned events where additional seals are not required. 400 - 850 cfm - good on wissota style and open engines up to 415 cid. Holley 80541-2 – HP 4150 series 650 CFM Holley carburetor has mechanical secondaries, dual accelerator pumps, four corner idle adjustment and dual feed inlets. That development led to three engines released in 2002: (88958602, 88958603, and 88958604). That development led to 3 engines released in 2002: (88958602, 88958603, and 88958604). This is a great bolt on carburetor for crate motors. Engine Pulley Sets. They may have wear, scratches, dings, cracks, discoloration and other flaws we may have missed with our 61 year old eyes. That is VDL’s forte: a custom built 650 HP or 750 HP or 4412 carburetor built specific for your crate engine and class of car. This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. 2bbl or 4bbl. Your Holley 80541-1 or 4777 carb is Disassembled. We’ve spent a lot of dyno and track time with these. Carburetor comes with #70 primary jets, #70 secondary jets and a 6. Holley. 4BBL HP Body; 750 cfm; Gasoline; For GM 604 Crate Engines Jet 1 Piece Sport Mod 602 Crate Headers Over Rail Ext. The dual plane intake is not an air gap design. -steel driveshafts and yolks-no titanium parts anywhere on the car Race-1 602 Hot Crate Parts. 28X1. I have been working on a 650 street HP carb for this engine and it has standard holley straight leg boosters in it. 6 RR, air gap intake, holley 650, 1-5/8 longtubes, 2. Includes: Counter-balanced hub Includes: Counter-balanced hub Beyea IMCA and UMP dirt Northern Sport modified headers and turndown. Re-create and Race-prep it for less than 50% of new! So much more than a rebuild. VP CHP Plus is our ultimate crate engine fuel, producing additional horsepower and torque compared to CHP and MS109 fuels. Pre-Race 58. This is a lightly used KillerCrate Carb Spacer. Carburetor, GM 602 Crate Engine Carburetor, 750 cfm, 4-barrel, Square Bore, Mechanical Secondary, Dichromate, E85, Circle Track, Each. Willy's specifically dyno tests and tunes these carburetors to provide just the right amount of power for GM's 602 crate engines. We are ready to build the carburetor you need, just for you, one at a time. Jet by BLP Sport Mod 650 HP Crate Motor Carb. These Speedway exclusive carbs have spent countless hours on the dyno and track test sessions resulting in a custom hand built, sized, wet flowed and maximum performance All 602 crate carburetors from Willy's feature a Holley HP series main body, a 750 Holley base plate, and Holley HP metering blocks. Tech Data Sheet If you have the List # of the Carb, you'll find the jet sizes. Designed to correct the 3-degree forward tilt of manifolds originally meant for Chevy trucks, this spacer restores proper carburetor alignment for optimal fuel distribution and float level stability. Boosters may not be changed. Pre-Race 56. Running VP Oct 25, 2001 · A 12-14 step jet spread would indicate no rear PV and somewhat large primary PVCR's to have a carb properly calibrated front to rear on WOT if the carb's venturii is the same. Jan 25, 2017 · Crate Insider 592 S. There is a series of 3-digit jets. Need help because I do not want to blow another engine for possible timing issues. A 602 is the same size as a #60 except that the dimensions are more accurate. The results are not HP based but with the fuel air ratio. Specifically designed for the GM 602 crate engine Primaries measures 1-5/8" in diameter and the collector is 2-3/4" in diameter Fits Allan (2007-Up) Bullet, Edge, Hamilton, Harris, Jet, LG By Owens, Rage, Razor, SB Chassis, Skyrocket Apr 14, 2015 · However, if you decide to remove the power valve, then bigger main jets must be installed. blogspot website TMPCarbs. 69 STI 2C DCB Gas; 4760 Series - 604 Crate 1. When you use a carburetor on a crate engine, tuning the carburetor becomes the defining skill to gaining horsepower and torque. Carburetor/Air Cleaner Kits in-stock with same-day shipping. 95 Add to cart Details Oct 16, 2012 · -GM 602 Crate engine only-Holley part #4777 650 cfm carb box stock only (only modifications allowed are jets and powervalves)-Scholenfeld Headers part # 1122 BCM and muffler part # 123030 and mufflers must be welded to the headers. 030 over, no tolerance. I've got a Camaro pure stock, weighs 3200 lbs. Call (855) 806-1147 or Order Online! crate engines. Commonly known as the 602, 603 and 604 (the last three digits of the part number), these three engines fit easily into most existing racing classes with minor adjustments to the rules (typically weight breaks). This spacer levels the carburetor on the intake manifold. The Chevrolet Performance CT350 circle track crate engine delivers competitive and durable power at an economical price! Designed for circle track's weekend warriors, this bullet-proof 350-horsepower, 350-cubic-inch IMCA-sealed racing crate engine (often referred to as the "602 crate") is a tough combination of power and reliability – and it fits almost any racing budget. Dyno tested and tuned for GM 602 and 604 Crate motor. Troy Patterson wrote:The jets are necessarily large because the carburetor is not a well modified carburetor for the engine. Oct 31, 2004 · For example, the 650DP 0-4777 has 6 different configurations; One without a dash number, and -1 through -5. No roller cams or roller rockers. The correct distributor phasing, timing marks, race-prepped carburetor, carb spacer and better Valve Springs, Rated Rockers can all significantly improve performance. CI: There was been a lot of talk lately about the high 1" Thick; 4BBL; Aluminum; For GM 604 Crate and Open Motors. 75 STII 2C DCB T3A E85 ; 4760 Series - 602 Crate 1. HTH Jan 25, 2024 · Knowing the best carburetor for 604 crate engine racing will depend on several factors, including your racing class rules, track conditions, and more. its a 306, 510/534 cam, stage 2 aluminum Dart Jr. 500CFM; Gasoline. By: Search Advanced search… Jun 25, 2014 · Hendren Racing Engines is one of the largest and most respected Crate Engine Rebuilders in the nation. Ultrasonically Cleaned. Send Your Carb To The Spa. Atmospheric pressure, altitude, and other factors can affect the performance of these jets, especially on race day. Unlock the full potential of your 602 Crate engine with the A&M Innovations 602 Angled Carb Spacer. 00 Please read our crate tech tips available on the home page to get the most out of your crate engine and carburetor. At KillerCrate, we make it easy to buy a quality Race-Prepped Crate engine, deliver it to your doorstep and provide outstanding service. 5 exhaust, mallory regulator, aeromotive 4760 Series - 525 Crate 1. The sealed engine format means racers spend less time on the engine and more time behind the wheel, with engines only requiring oil changes and other light duty service parts, easily lasting an entire season. 4BBL HP Body; 750 cfm; Gasoline; For GM 604 Crate Engines Feb 13, 2013 · Search titles only. rest set idle and carb screws are at 2 1/2 turns out. I believe the standard jets are 71 primary and 76 secondary. Features aluminum HP main body, 750 Holley baseplate, and Holley HP metering blocks. Air bleeds, jets, power valves, proper positioning of the boosters and some metering block work make all the difference in the world. Aug 4, 2023 · Crate Insider 592 S. Shop Carburetor Adapter Plates and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. Buy Holley 0-80541-2 4150 HP 650CFM IMCA Sportmod Carburetor - 602 Crate Engine NASCAR Approved From Karl Kustoms, One Of The Largest Online Retailers Of Chevy Performance Parts In The USA. The recommended carburetor jetting for this application is #73 primary jets, and #73 secondary metering plate. Crate Insider 592 S. Switching from Sunoco 100 Unleaded made that combination almost -57HP just swapping fuel for initial baselilne runs. In our testing we gained 4hp on the dyno and we see the Oct 21, 2009 · None touching each other. Gas or e85. 70 jets all around. 69 STI 2C DCB T3A E85 ; 4760 Series 4BBL 1. Product details 602 Crate Engine, 4 barrel Carb = 2500 lbs. Hydraulic cams and hydraulic lifters only. WCD80541-E85 - 602 WCD50127-E85 - 604 Willys Carburetor, Equalizer Super Bowl, 4-Barrel, 750 CFM, Square Bore, No Choke, Mechanical Secondary, Dual Inlet, Black Powder Coat, E85, 604 Crate Engine, Each $2695. Willy’s Carburetor and Dyno Shop manufactures high performance carburetors for racing engines. ” Experts say carburetor tuning offers much more to gain for crate engines than race fuel choice. Inspected. Here's the link to the Holley Carb List. 69 STI 2C DCB Gas/110; 4760 Series - 602 Crate 1. Learn all about what is a 602 crate Jul 2, 2014 · If the carburetor has mechanical secondaries, the secondary jets are playing a mixture role as soon as the secondary butterflies open. SCROLL DOWN TO SHOP. To understand what makes a race-prepped, high performance Crate Carb better than the "Carburetor that Uncle Billy does" or better than a new stock Holley out of the box; and even better than the carb you might get from the local carb rebuilder - let's explore the guts of your carb. These Willy's carburetors feature a Holley HP main body, a 750 Holley base plate, and Holley HP metering blocks. We have the GM Sealed 602 Crate Engine that will only have the GM seal bolts. Mar 8, 2021 · Add to Cart Account; 0. All post-race weights will be allowed 1 pound per lap raced for fuel burn off. Holley 37-119 Model 4160 4 Barrel, 600 CFM Carb Rebuild Kit 602 Crate Engines and Accessories. (The fuel level for the 80541-1 Speedway Motors offers multiple different part numbers for the GM 602 crate engine. Stealth 602 Carburetor - E85; Stealth 602 Carburetor - E85 Crate Insider 592 S. Holley 37-119 Model 4160 4 Barrel, 600 CFM Carb Rebuild Kit Apr 20, 2012 · V8 engines must be 305 (Chevy), 302 (Ford), 318 (Chry. Troy Patterson blog tmpcarbs. The correct distributor phasing, timing marks, race-prepped carburetor, carb Carburetor Jets Carburetors Filler Necks Willys Carb Carburetor Gas Equalizer GM 602 Crate 86022EQ. what is the power output of a crate motor as compared to a well built pure stock motor? We'll be using a Holley 500 CFM carb. 95 Add to Cart Holley. These GM 604 and 602 crate engines have found favor with some racers, and just as Buy 602 Crate Engine – Chevrolet Performance CT350/602 Circle Track Crate Engine From Karl Kustoms, One Of The Largest Online Retailers Of Chevy Performance Parts In The USA. Nov 27, 2007 · The Jet in a Crate Late Model? By 78racing November 27, 2007 in Bob Hilbert Sportswear Dirt Racing National / Northeast. However, after several Track Championships and winning 7 out of 14 Races at Devils Bowl in 2016, we can tell you that Not all 602 circle track Crate Engines for Pro Stock, Thundertrucks, Sportsman Modifieds and other types of crate racing are created equal. Circle track cars run in a high heat environment and in the southeast a high heat high humidity environment. 650 HP Pro-Flow Circle Track Gas Crate Carburetor. Willy's specifically dyno tests and tunes these carburetors for GM's 602 crate Finally a GM 602 crate motor carb that won’t break the bank. The 602 is 350 hp engine used in restricted engine classes. Jun 24, 2004 · i need some advice on what jets to start off with on my combo, i have no clue what jets are in there now as i bought the carb used from a friend. (big swing, but getting desperate) Think that covers it. ). If you want more from your race engine; choose Beyea IMCA and UMP dirt Northern Sport modified headers for a performance boost! Header Style: Circle Track 4-1 one-piece Header Material: Steel Header Finish: Painted Weld-Up: No Primary Tube Diameter (in): 1-5/8" Flange Ive got a few questions for the engine builders out there. Apr 30, 2012 · With the 602 crate engine, if you are running a 2bbl carb, a 1 inch spacer is prefered, with a 4bbl carb a 1/2 inch spacer gives the best results. Established in 1985, Willy builds asphalt and dirt circle track racing carburetors, as well as drag racing, marine, truck pulling, and pro street carbs. You should also verify the power valve is both sized properly and doesn't have a failed or leaking diaphragm. Oct 12, 2008 · GM 602 Crate Motor 3100lbs. Im considering the options of a crate motor. The flanges are laser-cut to ensure good support and seal. All new crate engines must be purchased through track. | #42737119. 500 CFM Competition Race Carburetor, Stock 4412 Appearance Please read our crate tech tips available on the home page to get the most out of your crate engine and carburetor. 69 ALKY 2-C, Circle track 604 crate - free shipping The new NGK and Brisk spark plugs are specifically designed for the 602/604 crate motor platforms, and are engineered to withstand the higher RPMs associated with race applications. Description: from Crate Innovations Counter-balanced crankshaft hub assembly for 602/604 crate engines and 87 and up Chevy 350 one-piece seal engines. Any help or ideas are appreciated. Top. CNC-Motorsports Race Prep Special Calibrated GM 602 Crate Engine Gas Carburetor, Also Calibrated to work with the Wissota Concept and USRA Concept Engine, 650cfm, Double Pumper, Race Ready $1,029. Call (855) 806-1147 or Order Online! Dyno tested and tuned for GM Crate motor. Spray Washed. Ron E Guru Posts: 2085 Joined: Thu Aug 04, 2005 1:35 am Any stock carb is a no brainer. Shop Carburetor/Air Cleaner Kits and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. 38X1. Aug 16, 2010 · Just wondering what a good baseline starting point would be for the carburetor jetting on a 602 GM Crate engine running the 650 CFM Holley 4777 carburetor. Since the power valve is for fuel enrichment, if it is missing, the engine needs to get the extra, required fuel from somewhere. Bleeds, baseplate, butterfly, power valve channel and metering block magic worked. We are very pleased to announce that Steve Hendren has agreed to be a technical expert for Crate Insider. Crate racing was intended to level the playing field. $1,178. Open Motor = 2750 lbs. 12-19 CARBURETOR 10-19. Shop Race-1 604 Hot Crate Parts Shop All » Engines; Valve Springs 1. Mar 23, 2012 · GM602 Crate Engine with any Holley Carb. Race-1 specializes in the GM CTC engines and we offer a wide variety of services specific to the 602 & 604 crate engines. Kit Includes: (1) GM 602 Crate Engine Standard 4150 Gas Carburetor (1) 4-Hole Carburetor Base Gasket (1) Wissota-Spec 1 Inch 4-Barrel Carburetor Spacer (1) Fuel Log for GM 602 Crate Engine Std 4150 Gas Carburetor 910-602650 (1) Carburetor Stud Kit, 2 Inch GM 602 Crate Engine Standard 4150 Gas Carburetor Features the Ultra all aluminum main body Custom CNC metering blocks and aluminum bowls 7/8 List Price was 129. Carburetor, GM 602 Crate Engine Carburetor, 800-899 cfm Range, 4-barrel, Square Bore, Mechanical Secondary, Dichromate, Gasoline, Circle Track, Kit Part Number: WCD-WCD602-KIT Not Yet Reviewed Race-1 602 Hot Crate Parts. Shop Race-1 602 Hot Crate Parts Shop All » Engines; Valve Springs; Ignition; Carb Spacers; Air Cleaners; Carburetors; Oil Plugs, Adaptors, Filters, Oil Pans, and Coolers; Motor Mounts; Sprint Cam; Valve Cover Gaskets; Race-1 604 Hot Crate Parts. Any suggestions? Anything I should maybe be looking at in the engine itself. Holley/Edelbrock to Rochester 4G 4-Jet Carburetor Adapter Plate (59) Carburetor Flange Type: What is a 602 Crate Motor? | 602 Crate Engine Explained. 602 Crate Aluminum Carburetor • Willy's 602 gas carb features a Holley HP main body I just did a carb and distributor + treated stock GM Valve Springsfor a guy in NY and his fuel is Environment Friendly VP98 for a GM 602 Crate. 0% Left side anytime. May 9, 2018 · Since the engine had demonstrated some fluttering on the previous passes, the pit crew dropped the jetting – reducing the back jets from 77 to 67 and the front jets from 74 to 62. 250 - Slick track carb - designed for open engine mods and late models on slicked off tracks. 450 - 950 cfm - open mod and late model 415-440 cid. Then there is the Dyno Tested GM 602 Crate Engine, which is the Just wondering what a good baseline starting point would be for the carburetor jetting on a 602 GM Crate engine running the 650 CFM Holley 4777 carburetor. Description: DESIGNED SPECIFICALLY FOR THE 602 CRATE ENGINE. Sep 22, 2016 · I would like to know what is the best 650 DP main body and booster for a 602 crate engine. The choke assembly must be removed, and all screw holes may be permanently sealed. Carbs for GM 602 Motor. $399. Part #:WCD-81503-+ Apr 8, 2016 · Carburetors can go bad for several reasons. GM 602 Crate Engine Standard 4150 Gas Carburetor (4) Carburetor Barrels: 4-Barrel. Legal So I found the misses in my 602 crate motor. It has #65 jets in it. Exhaust is very short, comes out right behind the cab for now. JET PERFORMANCE PRODUCTS; For GM 602 Crate Engines. Features: Specifically Designed for GM Circle Track 602 Crate Engines; Dyno Tested May 26, 2008 · The crates run about $4,400 by the time the carb, water pump, and peripherals are purchased. Size or shape must not be altered. Carburetor / Air Cleaner: A model 4150 HP, 650-cfm Holley four-barrel carburetor is recommended for use on the CT350 circle track crate engine. However, adjusting the carburetor is a relatively simple job that can be done with a basic set of hand tools and a little bit of technical knowledge. $179. , 1. 99 . How about a Q-jet, they outflow any of Jet 1 Piece Sport Mod 602 Crate Headers Over Rail Ext. The AED Competition GM 602 crate carburetor features the Ultra all aluminum main body, AED Competition custom CNC metering blocks and aluminum bowls. All engines must use stock flat top pistons with 4 valve relieves. AED Competition has created an affordable GM 602 crate carb that out-performs the most expensive carbs on the market. Carburetor Adapter Plates in-stock with same-day shipping. 44 Jul 10, 2011 · The 4412 had 77 jets, but when I looked at the plugs, looked like the truck was running a bit rich. net Engine Professionals Magazine's TMP Tuning article, pg. rdsm hqlqyxp drcyjj wjmynk jhd urjqovff unxpr skx wdm lupkf sqftx zvsc xswgc qes oak