General Category > Quadrajet Carb Talk and Tips

Carb Choice

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blazer74:
Question about power pistons.    On carb 17085213 the power piston arms are angle upward 20 degrees or so and on my other carb 17056228 the arms are straight horizontal

Power piston springs Hp Kit   light blue for 14'"  vac  at idle?

Cliff Ruggles:
The arms should be level.  Pretty common to find them bent upwards, from previous tampering from uneducated builders trying to richen things up some instead of using the APT system.

All of the springs in our kit will work at 14" vacuum.  I'd use one of the stronger springs, dark blue or green for near stock set-ups.  The orange spring is for big cams and low vacuum, the light blue for moderate size cams in mild performance applications.....Cliff

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