307 CRATE ENGINES SMALL-BLOCKS ... 42 HT 383 ... 46 ZZ 383 ... 50 RACING ENGINES ... 58 CT 350/400 ... 72 LS 364/440 ... 82 454 HO ... 86 ZZ 454 ... 118 RPO ENGINES ... 124 HT 3.4L V-6 ... 126 4.6L Northstar V-8 ... Block (1986-later style), 1-piece rear main seal ......................... ....... ... Block (1986-later style), 1-piece rear main seal ......................... ....... ... Block (pre-1986 style), 2-piece rear main seal ... 133 TWO-BOLT MAIN BLOCKS ... 134 350 Main, 283 Bore size Bowtie Sportsman Block, 1 ... -piece rear main seal ....134 350 Bowtie Block, 1-piece ... rear main seal ... 134 FOUR-BOLT 350 MAIN BLOCKS ... Bowtie Sportsman block, 1-piece rear main seal ... Bowtie Sportsman block, 2-piece rear main seal ...
182 Gasket Kit, Vortec Design ... 182 Gasket Kit, Production Vortec Design ... 189 CYLINDER GASKETS HEAD BOLTS ... 189 Cylinder Head Bolts (1997-2003 ... 189 Cylinder Head Bolts (2004 and newer ... 189 Cam Installation Kit, LS Engine ... 190 LS6 Rod Bolts ... 192 LS Series 4-Barrel Carburetor Manifold ... 193 LS1 Engine Kit Installation Guide ... 196 427/454 Bare Block ... Bowtie Sportsman Block (1-piece rear main seal).................... 198 Standard ... Bowtie Sportsman Block (2-piece rear main seal).................... 198 Tall Deck ... Sportsman Bare Block (1-piece rear main seal) ....................199 Tall Deck ... Sportsman Bare Block (2-piece rear main seal) ....................199 Tall Deck ...