i know some of the differences when comparing the ls crank vs the gsr crank. the ls has a longer stroke and a narrower rod bearing contact.

i have a sleeved gsr block at 84mm and am debating on using the stock gsr crank or going with an ls crank. my ultimate goal is to break 500 hp at the wheel on pump gas. and i know that more displacement will help.

thanks for any help you can give

 

before the rampant search filled threads. The LS crank has wider rod journals. The displacement is going to help a little but not too much. Usually it nets more torque. Either way your goal is attainable.