blown97ss

iTrader: (8)

i have a 383 with a d1sc procharger. the first time i got it dyno it made 530 hp to the wheels at 10.5 psi. it has the stock crank pulley and a 4.25 pulley on the blower. my question is since i have ported heads and a more aggressive cam what size pulley would i need to get the most out of the engine. trying to stay around 10 psi.

blown97ss

iTrader: (8)

383 forged bottom end,ross racing pistons,scat crank and rods,9:1 compression, 1-3/4 long tube headers with 3 inch magnaflow exhaust , edelbrock intake manifold, 52mm bbk throttle body,230in 230ex 580in 580ex 213dur blower cam, water to air intercooler, procharger race valve, speed density tune, 60# injectors, tr6 plugs gapped at 30, aeromotive fuel pressure regulator set at 43.5, and 2 255 lph walbro with racetronics wire kit. efi connection setup. 180cc ported dart heads.

speedcrazy2

iTrader: (1)

the one you have now if you want to stay at 10 psi
you said it made 10.5 psi correct

or am i missing something?

your setup looks to be pretty well built and low compression so you can up the boost but you are gonna have belt slip issues with your 6 rib setup

Bob@BruteSpeed

iTrader: (16)

Since you changed out the heads and cam, you might try dropping to a pulley in the 3.90 range to try to keep in the 10 psi range. Bob

blown97ss

iTrader: (8)

ok thanks yeah it made 10 lbs of boost before. so now with the ported heads and bigger cam i dont see the same pulley doing 10 lbs, its a 8 rib setup. can u pm me a price on the blower pulley.

Bob@BruteSpeed

iTrader: (16)

http://shop.brutespeed.com/ATI-DPxxx...-ATI-DPxxx.htm

Here you go. Thanks. Bob