Quote Originally Posted by khaxnguyen
LS bottom end and GSR bottom end is different isnt it?
The main differences between the two bottom ends are:
The GSR has a 87.2mm stroke, the LS block has a 89mm stroke.
GSR has higher compression pistons
GSR has oil squirters
GSR has a higher volume oil pump
GSR already has oil passages to accept a VTEC head, LS does not
GSR has different size bearings
GSR has stronger rods
GSR is 1797cc, LS is 1834cc