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Power piston setting

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Old Feb 17, 2006 | 10:40 AM
  #1  
Tony78_280z's Avatar
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Car: 78 Datsun 280z with GM 350
Engine: Carbed TBI (Truck) 350 W/Ported 193s
Transmission: 700r4
Axle/Gears: Stock 280Z Rear
Power piston setting

I recently rebuilt my quadrajet, but I didn't make a note of how many turns out my power piston was before removal. What would be a good setting to start off at.

Thanks
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Old Feb 17, 2006 | 12:56 PM
  #2  
Sonix's Avatar
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
you could tighten it, then back it off 2.5 turns. I think that's a spec somewhere, but that's not at all what i'd recommend.

I think you should read this, for the best way to modify it.

https://webdisk.ucalgary.ca/~jmknopp...owerPiston.doc


edit: not sure if this is just specific to non-cc q-jets, I forget what the cc-qjet was like, the one time I took one apart...
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