LS 5.7L & 6.0L FLAT TOP - compatable with LS1/2/6 style cathedral port heads 366cid 4.010 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.0cc,434g,10.7CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 365cid 4.005 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.3cc,431g,10.1CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 366cid 4.010 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.3cc,433g,10.1CR, 4032.
LS 5.7L & 6.0L FLAT TOP - compatable with LS1/2/6 style cathedral port heads 370cid 4.030 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.0cc,442g,10.8CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 370cid 4.030 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.3cc,441g,10.2CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 376cid 4.065 x 1.340CH, 3.622stroke,6.098rod,0.945pin,-4.3cc,457g,10.3CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 377cid 4.070 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.3cc,457g,10.3CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 378cid 4.075 x 1.314CH, 3.622stroke,6.125rod,0.927pin,-4.3cc,459g,10.3CR, 4032.
LS 5.7L & 6.0L FLAT TOP - compatable with LS1/2/6 style cathedral port heads 403cid 4.005 x 1.105CH, 4.000stroke,6.125rod,0.927pin,-4.0cc,405g,11.7CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 408cid 4.030 x 1.105CH, 4.000stroke,6.125rod,0.927pin,-4.3cc,413g,11.1CR, 4032.
LS 5.7L & 6.0L DISH - compatable with LS1/2/6 style cathedral port heads 408cid 4.030 x 1.105RCH, 4.000stroke,6.125rod,0.927pin,-28.0cc,426g,9.2CR, 2618.
LS 5.7L & 6.0L FLAT TOP - compatable with LS1/2/6 style cathedral port heads 408cid 4.030 x 1.105CH, 4.000stroke,6.125rod,0.927pin,-4.0cc,414g,11.8CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 416cid 4.070 x 1.105RCH, 4.000stroke,6.125rod,0.927pin,-4.3cc,439g,11.3CR, 2618.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 417cid 4.075 x 1.105CH, 4.000stroke,6.125rod,0.927pin,-4.3cc,430g,11.3CR, 4032.
LS 6.0L & 6.2L FLAT TOP - compatable with LS3 / L92 style rectangular port heads 429cid 4.070 x 1.045RCH, 4.125stroke,6.125rod,0.927pin, -7.8cc,421g,11.2CR, 2618.