NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post

KirkEvil · 11-26-2009, 08:11 PM

I havent figured it out why yet, but not many people do 383 LS1's. Im not sure if there is a reason for it or not.

As for heads, stock 241 heads are already 67cc~10.1:1, and 243 heads are 64cc~10.5:1. Most people doing budget turbo builds go to the 317 heads; Im not 100% sure, but I believe they are 72cc~9.6:1.

EDIT: 317 heads are 70cc~9.8:1

The stock cam in a 383 is going to be weak for its potential. The 383 may require a bigger turbo to act the same as a 346 with your current sts turbo.

11-26-2009, 08:11 PM	#2
KirkEvil 10 Second Club Join Date: Feb 2008 Location: Eatontown Posts: 1,647 iTrader: (11)	I havent figured it out why yet, but not many people do 383 LS1's. Im not sure if there is a reason for it or not. As for heads, stock 241 heads are already 67cc~10.1:1, and 243 heads are 64cc~10.5:1. Most people doing budget turbo builds go to the 317 heads; Im not 100% sure, but I believe they are 72cc~9.6:1. EDIT: 317 heads are 70cc~9.8:1 The stock cam in a 383 is going to be weak for its potential. The 383 may require a bigger turbo to act the same as a 346 with your current sts turbo. __________________ 1999 C5 FRC: 12.7@114 2008 TBSS: 12.48@108 2017 Silverado 2500 do you even lift breh? Last edited by KirkEvil; 11-27-2009 at 11:42 PM.