vipvegas

iTrader: (13)

Well I cant seem to find a definate answer so seeking the pros. Here is the setup im in the middle of buying. Keep in mind this is a daily driver with STS t67..

2001 Ws6 ls1
Callies 4.00" Compstar crank and rods, arp throughout
EPP Forced induction cam
Cam specs: Dur @ .050 232 int 240 exh Lift .595 int .608 exh Lobe Sep115.0
Stock but polished heads
Chromoly pushrods
dual gold valve springs
#42 injectors
walbro 255
STS t67 with FMIC

Here is the debate... The pistons...
Should I go with the Wiseco -15cc dished and be at 9.6-9.7:1?
Or
Should I go with the Wiseco -32cc dished and be at 8.5:1?

Its killing me to make this decision and Id like to order tommorrow. What kind of numbers do you think this setup will make also on good tune.

Johnv

The -15 will be fine unless your gonna run huge boost or only have access to crap fuel.

The turbo is gonna be a bit small for a 383 and i would upgrade the injectors to 60s, your gonna max the 42s pretty quick with FI

Jimmy P

iTrader: (177)

I agree with everything that Johnv said. Plus dont forget to shim the valve springs for a little more pressure on the seat.

bondosgto

-15's. the extra compression will help with low end torque.

cablebandit

iTrader: (37)

-15s....im at 10.3 c/r with no ill effects