Rochester 4BBL Quadrajet 800CFM Big Block – 339001


Intended for Big Block or Large Cubic Inch Small Block Engines.

Category: SKU: 339001



  • Select highest quality cores for best performance and reliability
  • Strip to bare metal, inspect for defects, then apply dichromate coating for brilliant gold finish.
  • Strip and cadmium plate all hardware, including throttle shafts, linkage, levers, spring and screws.
  • Surface baseplate for flatness and glassbead for bright silver finish.
  • Install APT (ADUSTABLE PART THROTTLE) to allow adjustment of part throttle and cruise speed (steady throttle, 1800-4000 rpm) air/fuel mixture in seconds without any disassembly, tuning can be done while engine is running!
  • Apply epoxy to main body casting plug to eliminate common “leak down” problem associated with Quadrajets.
  • Install bushings in baseplate to eliminate any potential vacuum leaks at primary throttle shaft.
  • Assembled using the highest quality components, including:
  • New jets and metering rods.
  • High flow .130″ needle and seat assembly.
  • Nitrophyl solid composite float that can’t crack or sink.
  • Premium quality gaskets
  • High capacity accelerator pump featuring materials that are resistant to alcohol and other additive commonly found in today’s fuel
  • New electric choke for cold starting and driveability.
  • New choke pull-off for clean, smooth warm-ups.
  • 1 YR warranty all parts and labor

Additional information

Weight 15 lbs
Dimensions 15 × 15 × 15 in