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Vehicle Info NeededQuadrajet Carburetor 800 CFM Stage 1 Pontiac 350-455ci
Ships on Sep 15, 2026
Lowest Price GuaranteeJet Performance 32101 Features:
Jet Performance Products is a proven leader in automotive tuning technology. Our background in tuning started with Jones Performance Fuel Systems over 40 years ago. Our Fuel Systems Division has given us the opportunity to tune everything from NHRA drag race cars, off-road race trucks and Sprint Cup cars. This experience has been the basis for our line of performance tuning products for street applications. JET's engineering staff is unsurpassed and considered to be the best tuners in the industry. Our talented staff has made the company what it is today. Constant changes in computer technology of today's cars and trucks demand that the JET engineering staff be the best. Automotive computer systems progress daily, just like every form of technology, so we are dedicated to providing the customer with the latest in performance tuning technology possible. Extensive research and development, dyno testing and constant fine tuning ensures the most power from each part we make. JET's quickly growing staff of professional engineers and a highly dedicated team of performance enthusiasts run our everyday operations. Our ability to produce the best tuning in the industry gets you the end results that you want . . . MORE POWER- Quadrajet Carburetor
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
From the best tuners in the industry come modified Quadrajet carburetors from JET Performance to match your specific performance needs.
Streetmaster Rochester Quadrajet 4-bbl
STAGE 1 - Disassembled, cleaned and inspected to restore factory stock performance. Casting plugs are sealed with epoxy to prevent leak-down. All of the circuits are checked for proper sizing and the calibration is checked for proper jets, primary metering rods and secondary metering rods. Quadrajet Carb is reassembled with new float, choke pull-off and bronze bushed throttle shafts.
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STAGE 2 - All features of Stage 1 carbs plus fully recalibrated idle, off idle, main, accelerator pump and high speed circuits. Provides improved idle quality, instant throttle response and maximum torque and hp.
STAGE 3 - For serious street-strip and race applications such as circle/oval track and NHRA Stock and Super Stock classes. Fully modified Quadrajet with oversized .149 needle and seat assembly. Main well size is increased and balanced to assure proper top end, high RPM fuel flow. Extensive circuit modifications are performed to keep the fuel curve correct throughout the RPM range, clean idle quality, and instant off the line response.
JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
The Quadrajet, with its classic spread-bore design, was first introduced by Rochester for the Chevy 396 engine way back in 1965. The smaller primaries of the Quadrajet were designed for enhanced fuel economy and seamless drivability in traffic, with solenoid-controlled metering rods to help manage air/fuel ratio and big secondaries for when you need power. The Quadrajet remained almost unchanged until it was discontinued in 1990. Now, JET offers Quadrajets with some significant enhancements for performance, reliability and drivability.
Performance Benefits & Key Features
Quadrajet carburetors from JET are available with three levels of upgrades, depending on your needs. Stage 1 carburetors are disassembled, cleaned, inspected and rebuilt to factory spec, with proper sizing, new float, choke pull-off and bronze bushed throttle shafts. They are then checked for proper sizing and calibration with new primary and secondary metering rods. Stage 2 carburetors have all the features of Stage 1, with recalibrated idle, off idle, main, accelerator pump and high speed circuits for enhanced torque and horsepower with quicker throttle response. Stage 3 carburetors are recommended for competition such as circle track and NHRA Stock and Super Stock classes. They include an oversize .149 needle/seat assembly, with circuit modifications for the correct fuel curve through the whole RPM range, improved idle quality, quick response off the line and the increased well size helps with top end and fuel flow.
Fitment, Compatibility & Applications
These Quadrajets from JET are a good fit for small block and big block Chevrolet, Buick, Oldsmobile, Pontiac and Chevrolet/GMC light truck applications. Along with fully-equipped carburetors, this is your spot for rebuild parts like accelerator pumps, primary throttle shaft bushing kits, with 16 bushings and 4 screws, carburetor mounting bolts, primary and secondary jets, full rebuild kits, metering rods and floats (for non-electric carburetors). We also carry full hose and fitting kits, with stainless steel braided hose, hose ends, adapter fittings and fuel inlet fittings. Note that Stage 3 carburetors are designed for non-emissions controlled vehicles and for vehicles used in competition. With over 40 years in automotive tuning, JET is a trusted resource and a proven leader for fuel delivery for everything from NHRA cars, sprint cars, offroad race trucks and streetable muscle cars. A modified Streetmaster Rochester Quadrajet can be just the thing to round out the performance package for your GM vehicle.
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