Boost question?
Thread Starter
Le Mans Master
Joined: Dec 2002
Posts: 7,981
Likes: 37
From: Piedmont, SC Currently Own: 99 Nassau blue FRC. Previously Owned: 84,95,98 Indy Pace,01 Z06
Boost question?
I was running what I thought to be a 4.38 pulley on my p1sc-1. Come to find out today when I took the pulley off that it was a 4.00. I had ordered a 3.70 to replace what I thought was the 4.38 pulley. I made 5-6lbs of boost with the 4.00. Is that about right? How much boost should I be making with the 3.70? I was making 557 rwhp on the 5-6lbs with the 4.00. I did notice the belt on the 4.00 pulley had a good bit of slack in it. May have had some belt slippage. With the new belt and this 3.70 pulley, the belt is super tight! Was the boost about right for the 4.00 pulley? Mods are in signature.
Melting Slicks
Joined: May 2007
Posts: 2,014
Likes: 48
From: Dayton Ohio
I think so seeing I have about the same mods as you and made 9-10psi with a 3.85 pulley at 606/531.
That 3.70 should put you about 11-12 psi and over 600 easy
Do you know how much timing you are running and your A/F ratio?
92/93 pump gas only like me?
241 or 243 heads?
LS6 intake?
All dynos are different I was just looking to see how close our set ups were.
That 3.70 should put you about 11-12 psi and over 600 easy
Do you know how much timing you are running and your A/F ratio?
92/93 pump gas only like me?
241 or 243 heads?
LS6 intake?
All dynos are different I was just looking to see how close our set ups were.
Last edited by PEETYZ; Oct 9, 2014 at 01:11 PM.
Thread Starter
Le Mans Master
Joined: Dec 2002
Posts: 7,981
Likes: 37
From: Piedmont, SC Currently Own: 99 Nassau blue FRC. Previously Owned: 84,95,98 Indy Pace,01 Z06
I don't know the timing, but I could find out from my tuner. I run only 93 octane, 243 heads and ls6 intake. Everything from what a true z06 would have.
Melting Slicks
Joined: May 2007
Posts: 2,014
Likes: 48
From: Dayton Ohio
