262 ENGINE ASSEMBLY 0 646 CRANKSHAFT Engine Con t NOTE 3 With standard size crankshaft main bearing journals as follows position 7 2 3 4 2 299 inch dia and rear position 5 2 430 inch dia NOTE 4 With standard size crankshaft main bearing journals as follows position 7 2 3 4 2 449 inch dia and rear position 5 2 448 inch dia NOTE 5 Used as replacement for 1965 67 when service engine has been installed 64 67 All 327 exc Sp H Per 3889304 1 265 00 Ident No 3782680 Note 1 3 65 67 Chevelle w Sp H Per 327 66 67 Chevy w Sp H Per 327 3838495 1 320 00 ldent No 2680 Note 3 68 All 327 exc Sp H Per 3930809 1 265 00 Note 1 2 64 69 All 327 3941172 1 265 00 CRANKSHAFT Note 1 4 0 649 BEARING Crankshaft Clutch Pilot 62 69 All 327 3752487 1 N L BEARING bush type gz I D x 13 az 0 D x 4 0 659 BALANCER DAMPER PULLEY Crankshaft NOTE ln some cases double groove pulleys may be used in place of single groove pulleys NOTE Crankshaft harmonic balancer is also referred to as torsional damper 64 65 Chevelle w 4BC forged crankshaft 327 exc Sp H Per 65 Chevy Chevelle w forged crank 327 65 Pass w forged crankshaft 327 exc Sp H Per F l 3896904 1 43 75 w o pulley hub 4 Z O D 66 All 4BC w forged crankshaft 327 exc Sp H Per 67 All w forged crankshaft 327 exc Sp H Per 3896903 1 43 75 w o pulley 68 All 327 exc Sp H Per 3914684 1 43 75 65 Chevelle 327 66 68 Chevy Chevelle w Sp H Per 327 3817173 1 73 75 BALANCER ASSY 69 All w 2BC 327 6272221 1 43 75 DAMPER torsional 65 67 Pass 327 exc Air Cond A I R 68 Pass w A T 327 exc C A C 3755820 1 12 90 PULLEY stamped 3755820 64 66 Chevy w Air Cond 327 66 67 Chevelle w A l R 327 exc El Camino C A C 66 67 EI Camino w A l R 327 exc C A C 66 68 Pass w A l R 327 exc C A C 67 Camaro 327 exc C A C 68 Chevy 327 3744043 1 13 60 PULLEY doub e 65 B O D painted black stamped 3744043 64 Chevy Chevelle w P S 327 exc Air Cond 64 68 Chevy Chevelle Camaro w P S 327 65 68 Pass w P S 327 exc Sp H Per 3751232 1 12 90 PULLEY front stamped 3751232 64 68 Chevy Chevelle Camaro w Air Cond 327 65 68 Pass w C A C C Deluxe Air Cond 327 exc T H 3850838 1 14 80 PULLEY 72 G4 0 D 66 67 Pass w 62 amp C A C w T H 327 3874414 1 14 80 PULLEY 2 grooves 72 G4 0 D 66 EI Camino w A R 62 amp 327 exc Sp H Per 66 SS w A R 62 amp 327 exc Sp H Per Air Cond 3874418 1 13 60 PULLEY front 2 grooves 67 Pass T H w C A C 327 68 Pass w P S C A C 327 exc T H 3911013 1 14 80 PULLEY crankshaft 7 S4 O D 69 Pass w Air Cond 327 3972180 1 26 50 PULLEY 3 groove 69 All w P S 327 exc Chevy C A C 69 Pass Chevelle 327 exc P S C S C 3956666 1 15 20 PULLEY ASSY 2 groove GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 0 646 0 659 0 64 REV 4 81