alright guys. what is diffrent about an lt1 bottom end in comparison to a normal small block. are the crank, rods, and pistons the same? if not how do they differ? obviously the top end is diffrent with the intake manifold and then the reverse flow heads, but i wasnt sure if bottom end parts were interchangible with other small bolcks. Thanks for the help.

 

Pistons are lighter, rods are better (but interchangeable), Crank is balanced for the lighter pistons. (1 piece RMS)

 

As well as being internally balanced in the front and externally in the rear.

 

2-pc. rear main seal. So, the crnak is different than the older Gen I.

Rich

 

I think ya got that one backwards its only a 1 piece rear main.