power valve recomendation. please!
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From: anderson ,sc
Car: 89 formula/00 z28
Engine: carbed 350/ls1
Transmission: 700r4/ a4
Axle/Gears: 3.23 posi/ 3.73 posi
power valve recomendation. please!
I have a Holley 4779c carb with power valve delete done. but after being told i need one.i want to put one back in. At idle in park I have 17 inches vacuum. just wondering if anyone had any ideas on what size?
Last edited by intex1982; May 30, 2008 at 05:59 PM.
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: power valve recomendation. please!
with 17" of vacuum, you'll want to run like an 8.5" powervalve
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Joined: Apr 2006
Posts: 221
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From: Morrison IL
Car: 88 GTA, 74 T/A
Engine: 383 stroker (Procharged)
Transmission: TH400 w/brake (new 2013)
Axle/Gears: 12-Bolt S60 - 3.73 (new 2013)
Re: power valve recomendation. please!
I have a 383stroker with 10in of vac @ idle and i'm using a 5.0 power valve
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Joined: Jul 2001
Posts: 667
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From: Louisville Kentucky U.S.A.
Car: 86 Iroc Z
Engine: 406
Transmission: 350 Turbo
Axle/Gears: 373
Re: power valve recomendation. please!
always run a powervalve that is half of your vaccum reading or closest to the half mark.
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