Procharger
10-06-2007, 08:05 PM
#1
Procharger Hey guys just want some advice on this F1A kit. Does anyone know how much boost i might see using 4.75 headunit and a 7.25 crankpulley.Im trying to keep the boost down cause of my stock internals.I know this is a big blower but its what i will need when i go big. My compression i think is 9.5to1 with my AFR 225 72cc heads.Any advice would be great.
BOSS APPROVED!
10-07-2007, 06:01 AM
#4
We sold an F1A kit to a local customer with an '04 GTO with stock internals. He had a custom 5.50" blower pulley made for the head unit, and now he's seeing 7 psi of boost. Bob
10-07-2007, 10:46 AM
#5
A 7.25/4.75 should work since you have lower compression and assuming the cam in your sig is a 112-114LSA. Most likely put you around 9-10psi, which is a lot on a stock bottom end, wont be the most efficient thing on earth but should work.
Since you are using a 7.25 crank pulley I assume its an SDCE setup? I ask since I had a hard time getting a 4.25 blower pulley on with the SDCE, had to do a bunch of grinding on the brackets.
Since you are using a 7.25 crank pulley I assume its an SDCE setup? I ask since I had a hard time getting a 4.25 blower pulley on with the SDCE, had to do a bunch of grinding on the brackets.
