nokia2005

hi guys...

Could some one please tell me the best simple way to increase the CR in my Engine to get 10.5

the engine is

LS1 Low Compression Features -

Built entirely from brand-new parts.
Sold outright, no cores required!
GM LQ9 iron 6.0 liter block (includes block plugs)
4.000" Eagle 4340 forged steel crankshaft, balanced to rotating assembly
4.000" Ross 2618 forged alloy pistons with -28.50cc dish (includes new rings and full-float pins)
402-CID displacement
Eagle 6.125" H-beam rods
Includes new, factory-installed cam bearings; Clevite rod and main bearings
9:1 compression ratio (nominal; ultimate compression ratio will depend upon heads and gaskets used)

WKMCD

iTrader: (2)

Not going to happen without replacing the pistons. To get to 10.5 you'd have to have heads with 35cc combustion chambers.

nokia2005

Hi

could some one please give me a spacific piston size to reach the 10.5 CR

ads_99ta

what heads are you using? is there a specific reason you want 10.5:1? i would contact one of the vendors and tell them what you have so they can match you heads and pistons accordingly

1bad lad

run a flat top piston with valve reliefs and run some l92 heads.................get pistons from diamond racing pistons. good stuff