If i wanted to build a stroker using a ls2 or lq9 block and installing a 4in crank what pistons and what length rods would i need? Oh almost forgot i dont want to bore it out, want to use gm parts if possible Also using l92 heads.

 

Then just order LS2 pistons in the stock bore size, but specifically made for a 4" stroke crank. Rod length often used is 6.125". Lots of sponsors on the right to help. Try Scoggins Dickey, MTI, or Thunder Racing. You just need a 4.00" forged piston set, 6.125" forged H or I beam connecting rods, and the right reluctor installed on the crank (24x or 58x - depending on the vehicle going into).

 

We have a full balanced stroker package from Callies compstar, comes standard with Mahle pistons, you can select them for L92 Mahle stroker pistons, or change them out for Diamond pistons to your choosing.

http://www.ls1speed.com/cont.cfm?cid=C0000184