292 ENGINE ASSEMBLY GMC GROUP 0 639 BEARING Camshaft No 1 Front 73 78 All 4 14002525 I 4 90 BEARING 0 546 8 1210A 0 643 BEARING Camshaft No 2 Front Intermediate y 73 78 All 14002525 I 4 90 BEARING 0 546 8 1210A 0 646 BEARING Camshaft Center or Rear Intermediate 7178 All 14002525 2 4 90 BEARING 8 1210A 0 549 BEARING Camshaft Rear 7178 All 14002525 I 4 90 BEARING 0 546 8 1210A 0 553 PLUG Camshaft Bearing Hole in cyl block 7178 All 3994255 1 53 PLUG rear steal 2 dia x thk 8 1360A 0 603 ROD ASM Connecting 7178 All 33I108 6 34 25 ROD ASM 8 1840A 0 616 BEARING UNIT Connecting Rod GMC 8 18608 NOTE Unit consists of one upper and one lower bearing 73 78 All 3910555 A FI N L BEARING UNIT std 8 18608 7178 All 3910556 A R 6 95 BEARING UNIT 001 U 8 18608 7178 All 3910557 A R 7 00 BEARING UNIT 002 U S 8 18608 73 78 All 39 0558A R 8 40 BEARING UNIT 010 U S 8 18508 7178 All 3910559 A R 8 40 BEARING UNIT 020 U S 8 18608 0 623 BOLT Connecting Rod Bearing Cap 7178 All 14050532 12 l 30 BOLT 8 1870A 0 626 NUT Connecting Rod Bearing Cap Bolt 7178 All 3866766 A R 33 NUT 24 x thick hex head 8 1900A 0 629 PISTON ASSEMBLY with Pin Refer to Piston Chart for model V application GMC 8 19208 NOTE Individual piston assemblies are available for warranty purposes and for replacement of pistons damaged when making repairs to engine assemblies When ordering such parts it is necessary that you specify on your order the reason the parts are required and also that the following Note appear on your onden Do not ship unit package quantity 73 78 All exo L P Gas 3794494 6 30 50 PISTON ASM std 8 19208 73 78 All exo L P Gas 3794495 6 30 50 PISTON ASM 001 0 S 8 19208 73 78 All exc L P Gas 3794497 6 31 00 PISTON ASM 030 0 8 8 19208 0 643 RING UNIT Piston Service Sets GMC 8 19608 Original Equipment Type Complete set for one cylinder per container 7178 All 326394 6 14 35 RING UNIT std 8 1950D 73 78 All 326397 6 l4 50 RING UNIT 030 0 5 8 1950D 0 646 CRANKSHAFT 73 78 All 3299989 1 373 00 CRANKSHAFI 8 1450A 0 649 BEARING Crankshaft Clutch Pilot 73 78 All 3752487 1 N L BEARING bush type et 0 D x s 5 0200 0 659 BALANCER Crankshaft 7174 All 3980230 1 100 00 BALANCER w pulley 3 groove 7 0 8 8 1450A 75 78 All 352197 1 51 75 BALANCER 3 groove 8 1450A 0 662 WASHER Harmonic Belancer and Crankshaft Pulley 73 78 All 140I1829 1 l25 00 WASHER balencer n I D x l 0 0 x n thk 8 1460 0 666 FLYWHEEL ASM FLYWHEEL UNIT With Ring Geer NOTE l Unit consists of I Flywheel 1 Heinlorcement and 3 Pins 73 78 All exc A T 93406792 I 150 00 FLYWHEEL ASM 8 1980A 7178 All w T H 400 361052 1 74 25 FLYWHEEL UNIT Note 1 8 1980A WAREHOUSING AND DISTRIBUTIONDIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 5I REV 2 83 0 19 0 539 0 666