400 . . . . . . . . . . . . . . . . .60 LS SERIES LS1 ... 64 LS6 ... 68 LS2 ... 72 LS 364/440 ... 78 LS7 ... 125 3.8L 3800 Series II III . . . . . .126 4.4L 4.6L ... Block Components . . . . . . . . . .142 Cylinder Heads . . . . . . . . . . . . .144 Head ... . . . . . . . . . . . . . . .183 CHEVY LS SERIES Blocks ... 184 Cylinder Heads . . . . . . . . . . . . .186 Valve ... Block Components . . . . . . . . . .204 Cylinder Heads . . . . . . . . . . . . .206 Head ... 234 Cylinder Heads . . . . . . . . . . . . .234 Head ... 238 Cylinder Heads . . . . . . . . . . . . .240 Head ...
Reference Chart CHEVY SMALL-BLOCK V-8 LS SERIES SMALL-BLOCK V-8 CHEVY BIG-BLOCK ... NORTHSTAR V-8 RPO, GM ECOTEC FOUR CYLINDER Part Number Description Engine Size ... 350 HO Turn-Key with Iron Vortec Heads 350 cu in 330 380 30 12496968 350 HO ... Deluxe with Iron Vortec Heads 350 cu in 330 380 32 12486041 350 HO ... Base- with Iron Vortec Heads 350 cu in 330 380 32 12499712 ZZ4 Turn- ... Key with Aluminum Heads 350 cu in 355 405 34 24502609 ZZ4 Base ... with Aluminum Heads 350 cu in 355 405 36 12561723 ZZ4 ... Ram Jet 350 PFI with Iron Vortec Heads 350 cu in 350 400 38 12499710 Fast Burn ... 385 Turn-Key with Aluminum Vortec Heads 350 cu in 385 385 42 12496769 Fast Burn ... 385 Base with Aluminum Vortec Heads 350 cu in 385 385 44 12499101 HT 383 ... Engine Size HP Torque Page 17801267 LS1 without ECM and Wire Harness 5.7L 350 ...