Originally Posted by jrp
the fullsize truck line, fbody, and vettes got the LSx motors.
Instead of saying the trucks had LSx engines, it's better to say Gen III considering non of the 4.8, 5.3, 6.0, or 8.1's start with RPO LS*
LR4 - 293 cubes - 4.8l
LM4/LM7/L59 - 325 cubes - 5.3
LS1/LS6 - 346 cubes - 5.7
LQ4/LQ9 - 364 cubes - 6.0
L18 - 496 cubes - 8.1
If any of the above info is incorrect, please let me know. I also would like to find a reputable source for the bore/stroke of the Gen III engines if anyone knows.