4.25 pulley?

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Oct 15, 2005 | 03:47 PM

DAWGTUFF

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4.25 pulley?

how much boost will a 4.25 pulley make on a c5 with a A&A kit with a p1 blower,long tube headers, and ECS alky injection. what size pulley will i need to make 8-10psi. i would like to make between 500- 525 rwhp.

Oct 15, 2005 | 04:22 PM

0Jeff @ TPE

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From: Las Vegas NV

St. Jude Donor '06 & '12

Quote:

Originally Posted by DAWGTUFF

Thats to big of a pulley. You'll probably need around 3.65-3.75

Oct 15, 2005 | 06:48 PM

DAWGTUFF

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Quote:

Originally Posted by AMERICAN_HP

Thats to big of a pulley. You'll probably need around 3.65-3.75

thanks for the reply. i ended up buying an A&A kit because at the time you were not ready to sell your supercharger kit seperatly. i am sure you will get it sold and someone will get an awesome deal.

Oct 15, 2005 | 08:43 PM

SS930

Burning Brakes

Joined: Dec 2004

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From: New England

Quote:

Originally Posted by DAWGTUFF

You want to use the 4.25" pulley. At 6500 rpm you reach about 10-11 psi, probably 9-10 psi at 6100 rpm. I wouldn't go anything smaller unless you want more than 10 psi... and some belt slip.

Oct 15, 2005 | 08:48 PM

toplessvettetherapy

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From: Easley S.C.

I just had an A@A kit installed and used a 4.10" pulley that was suggested by Andy and the car made about 8.5 lbs of boost. It was very humid when we tuned my car, but I think that is the pulley you will need.

Oct 15, 2005 | 09:32 PM

DAWGTUFF

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so should i stick with the 4.25 or get the 4.10. i just want to make sure i have the right pulley on when i install the kit.

Oct 15, 2005 | 10:34 PM

SS930

Burning Brakes

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From: New England

Quote:

Originally Posted by DAWGTUFF

so should i stick with the 4.25 or get the 4.10. i just want to make sure i have the right pulley on when i install the kit.

There will only be about 1-2 psi difference between the two. I'd suggest the 4.25", but if you already have a 4.10", use that.

Oct 15, 2005 | 10:44 PM

toplessvettetherapy

Racer

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From: Easley S.C.

I had the same question! Go with the 4.10" pulley.

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Oct 15, 2005 | 11:19 PM

DAWGTUFF

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i already have the 4.25 pulley but i would like to have the 8-10 psi. i think i will get the 410 pulley. i dont want to go to same and end up with belt slip issues.