Originally posted by custom 68@Aug 23 2005, 02:39 PM
I guess I want to determine what you mean by "ls1" your signature shows a 99 with a 5.3 I would label this as an "ls1". Are you swapping in a different truck? I am not sure what differences the 5.3 and 5.7 motors would have in terms of power sure the 5.7 is bigger but are very simular
he's got a LS1 he wants to put in his 99 that currently has a 5.3, forgot the RPO.