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how to max out a p1sc
TECH Apprentice
Joined: Aug 2006
Posts: 366
Likes: 0
TECH Apprentice
Joined: Aug 2006
Posts: 366
Likes: 0
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Wow, most people with the f body bracket system end up with belt slippage going with anything smaller than a 3.55 pulley. Something doesn't sound right with your set-up, a 3.0 pulley should make a lot more than 9 psi unless your cam has a lot of overlap, or you live up at a very high elevation. Bob
That should do it. Back in the day I had a D-1SC and with the stock 6.0 six rib crank pulley and a 4.0 head unit pulley the car made 7 psi of boost. Swapped out the crank pulley to the MMS crank pulley and the boost went up to 15 psi. Bob
TECH Apprentice
Joined: Sep 2005
Posts: 360
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From: Bay Area, CA
Wow, most people with the f body bracket system end up with belt slippage going with anything smaller than a 3.55 pulley. Something doesn't sound right with your set-up, a 3.0 pulley should make a lot more than 9 psi unless your cam has a lot of overlap, or you live up at a very high elevation. Bob
Wow, most people with the f body bracket system end up with belt slippage going with anything smaller than a 3.55 pulley. Something doesn't sound right with your set-up, a 3.0 pulley should make a lot more than 9 psi unless your cam has a lot of overlap, or you live up at a very high elevation. Bob
You need to spin it pretty good to max it out... I think max is like 62k RPM for the P1.
BTW, I have an MMS crank pulley for sale... $150 shipped...
https://ls1tech.com/forums/lsx-parts...0-shipped.html
...and a 3.2" 6-rib blower pulley for $40 shipped :
https://ls1tech.com/forums/lsx-parts...pped-each.html
I just upgraded to an 8-rib setup.
Cheers,
Rob (Bad30th)
BTW, I have an MMS crank pulley for sale... $150 shipped...
https://ls1tech.com/forums/lsx-parts...0-shipped.html
...and a 3.2" 6-rib blower pulley for $40 shipped :
https://ls1tech.com/forums/lsx-parts...pped-each.html
I just upgraded to an 8-rib setup.
Cheers,
Rob (Bad30th)
I'd check everything out. You can cap off the intercooler tubing at the throttle body, and at the blower, and pressurize the system by installing a schrader valve into one cap. Last year we had a new ProCharger GTO intercooler that was leaking boost at a missed weld, it happens. Bob
