General Category > Quadrajet Carb Talk and Tips
Duel Power Piston
lightning boy:
I have a Qjet from a 74 Pontiac that has the aneroid valve in the front with two power pistons. One controlling the primary metering rods, and another controlling an additional rod.
I have never worked on one of these before. What were they for and can they be modified for street use?
Cliff Ruggles:
Pontiac carburetors didn't use that arrangement.
What is the carburetor part number?
lightning boy:
It's a 7045184
Cliff Ruggles:
Without taking the time to look it up I'm pretty sure that's an Oldsmobile Q-jet, not one from a Pontiac engine.....
Burd:
My carb booth says Old’s, 1975, 455, w/ AC, delta, cutlass, ambulance, and hearse or Hurst for the dummy’s that say that.
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