turbo and 317 head's?
 

i have a stock 2001 ls1 w/4l60e in a 70 chevy truck gonna do single turbo and a cam. i was wondering if i should put on a set of 317 heads or just use the 241's. what motor can i find the heads on and what will my compression drop to. i plan on running 7-9 pounds of boost.

They come on LQ4's and LQ9's.

Jay

317's flow a lot better than the 241's so I would say put on the 317's. The 317's can be found most commonly on the 6.0L full size truck engines.

thanks guys will they drop the compression as well

Yes by about .8