Compression Ratio: 243 or 317 on LQ4?
12-26-2011, 08:41 PM
#1
Teching In
Thread Starter
Join Date: Jan 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Compression Ratio: 243 or 317 on LQ4? Im looking into getting an LQ4 built for my '99 SS, which will eventually be procharged. I already have LS6 heads. If I'm not mistaken, the compression ratio on a stock LQ4 with 317 heads is 9.5:1 (great for boost). The 317's flow the same as the 243's, but the 243's will raise the compression ratio. Does anyone know how much?
