Originally posted by Blown4x4@Mar 25 2005, 09:39 PM
Well the thing is i can trade my stock heads for the LS1's. My buddy is getting a set of 5.3 heads and has to pay the core because the ls1 heads wont count tward it. So i give him my 5.3s and he doesnt have to pay the core.
The only benefit is you'll drop compression... you'll also go to a bigger intake valve that'll shroud the chamber a good deal which I don't like.

The 5.3 has a lil 3.78" bore and with a 2" intake valve that's not too good of a match.