LT 5.3L DI DROP-IN FORGED REPLACMENT ASSEMBLY NO BALANCING, NO COMP RATIO CHANGE 325cid 3.780 x 1.324CH, 3.622stroke,6.098rod,0.943pin,3.9cc,474g,11.5CR, 4032.
LS COMBO DOME - compatable with LS1/2/6 style cathedral port heads & LS3 / L92 style rectangular port heads 402cid 4.000 x 1.110RCH, 4.000stroke,6.125rod,0.927pin,9.2cc,454g,13.7CR, 2618.