Holley Carb - Moparts Forums

Holley Carb - 07/29/13 02:03 AM

How much is the value of a power valve? How many jet sizes? The 830hp carb i have has a the power valve removed and plugged but was running with 88 jets front & rear.Factory setting is 86 with a 6.5 pv.

Posted By: MR_P_BODY

Re: Holley Carb - 07/29/13 02:17 AM

I've always added 7 jet sized when removing a PV and
then fine tune as needed... but 7 is very close

Posted By: DaveRS23

Re: Holley Carb - 07/29/13 02:34 AM

If you mean the PVCRs, they vary between models of carbs. The only way to know is to pull the PV and use wire drills to measure the PVCRs. That will get you close.

Posted By: 77DragracerR/T

Re: Holley Carb - 07/29/13 03:29 AM

Ok I'll try 7 and work from there.

Posted By: Dodgem

Re: Holley Carb - 07/29/13 01:31 PM

Yea normally you go up 7 or 8 sizes with the PV plugged.