Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: Tuffnut on January 22, 2019, 05:47:31 PM

Title: Power Piston Spring ID
Post by: Tuffnut on January 22, 2019, 05:47:31 PM

I purchased a kit from Cliff's. My 350 is running 16-17" vacuum at idle. Which spring color should I start with?
I should use a spring half my vacuum? Which color would this spring be as no ID came with them.

Thanks

Jeff

Title: Re: Power Piston Spring ID
Post by: Sonny on January 22, 2019, 07:46:52 PM

This old post might have the details you need
https://cliffshighperformance.com/simplemachinesforum/index.php/topic,1248.msg5575.html#msg5575 (https://cliffshighperformance.com/simplemachinesforum/index.php/topic,1248.msg5575.html#msg5575)

Title: Re: Power Piston Spring ID
Post by: Tuffnut on January 23, 2019, 07:33:12 AM

Thanks Sonny, with 17" vacuum at idle and a heavy car 75 Supreme Cutlass with an 200R4 Over drive tranny with 3:42 gears, I would think I should be trying the 10" first. Always go back the 8" if needed.

Thoughts?

Jeff

Title: Re: Power Piston Spring ID
Post by: tayto on January 23, 2019, 02:15:29 PM

i have a black spring in my kit, is that the heaviest spring?

Title: Re: Power Piston Spring ID
Post by: Cliff Ruggles on January 24, 2019, 03:22:30 AM

No black spring in our kit, but there is a dark blue and it is the strongest spring in there.  I'd use the dark blue one for what you are doing......Cliff

Title: Re: Power Piston Spring ID
Post by: Tuffnut on January 24, 2019, 07:34:09 AM

Thanks Cliff, I'm excited to try the kit you sent me.


Jeff