kdavis

iTrader: (14)

i am looking to build a 370 with 317 heads but dont know what cc pistons to go with. i am looking for 9:1 cr. it will have a stock gm crank with callies rods. my goal is 800 whp. i havent decided to go twins or a single.

cablebandit

iTrader: (37)

wiseco
444xs for 4.0 bore will get you approx. 9.0 c/r with 317 heads
444x05for 4.05 bore

page 17 of the catalogue
http://www.wiseco.com/Catalogs/Automotive/Chevrolet.pdf

kdavis

iTrader: (14)

so the K444X3 -11cc. because a 3.70 is a 4.030 bore with a 3.622 stroke. would i need to run a 6.098 or a 6.125 rod because the iron block deck height is .010 shorter than the ls1 block? by using the shorter rod would it lower the cr enough to get to 9.0 form the 9.2?

cablebandit

iTrader: (37)

just worry about p/v clearance....9.2 cr is fine. I run 10.3/4 c/r and 93 octane on the street with meth and 7psi. i have done the same without the meth though and everything was fine for a short pull on the street.

kdavis

iTrader: (14)

ok thanks for all the help