Jet Performance Rochester Quadrajet Stage 1 Rebuilt Carburetor

The Jet Performance Rochester Quadrajet Stage 1 series delivers professionally rebuilt, drop-in replacement carburetors engineered to restore the legendary performance and reliability of the classic Rochester Quadrajet design. Each unit is hand-built using Jet's rigorous Stage 1 rebuild process — combining decades of real-world carburetor expertise with meticulous craftsmanship to produce a ready-to-run carburetor that performs reliably straight out of the box.

Stage 1 Rebuild Process:

• Hand-selected cores — each carburetor begins with a carefully chosen core, fully disassembled and thoroughly inspected for structural integrity
• Deep cleaning — complete cleaning of all internal components before rebuilding begins
• Epoxy-sealed casting plugs — main body casting plugs are permanently sealed with epoxy to prevent fuel leak-down into the intake manifold, eliminating hard-starting and lean-out conditions
• Circuit verification and calibration — all fuel and air circuits are checked for correct sizing and recalibrated with proper jets, primary metering rods, and secondary metering rods for consistent, repeatable performance
• Premium replacement components — reassembled with a new float and choke pull-off for long-term reliability
• Bronze-bushed throttle shafts — eliminate vacuum leaks caused by worn stock shafts, ensuring smooth and precise throttle operation

The Rochester Quadrajet's iconic spread-bore design — featuring small primary bores for efficient everyday cruising and large secondary bores for wide-open throttle power — remains one of the most respected carburetor layouts in American automotive history. Jet's Stage 1 rebuild process directly addresses the known weaknesses of aging stock units while preserving everything that made the Q-Jet great: strong fuel economy at cruise and responsive power under load.

Jet Performance Products has been a trusted leader in carburetor tuning and automotive performance for over 40 years, with roots in drag racing and a proven track record across NHRA, off-road, and street applications. The Stage 1 Quadrajet line spans a wide range of passenger car, light truck, big block, marine, and specialty applications — offering a cost-effective, professionally built alternative to unverified used or poorly rebuilt units. Select the correct variant for your specific application.