400 ENGINE ASSEMBLY GMC GROUP 0 51 9 Con t NOTE Engine Camshaft Break in Oil Group 7 850 should be used when installing new camshafts 75 78 All Blazer K Jimmy K 3896929 1 103 00 CAMSHAFT ident No 3895930 8 1200 r 0 539 BEARING Camshaft No 1 Front 75 78 All Blazer Jimmy 474005 1 14 90 BEARING stamped l 8 1210A 0 543 BEARING Camshaft No 2 Front Intermediate 75 78 All 474006 I 14 85 BEARING 2 8 1210A 0 546 BEARING Camshaft Center or Rear Intermediate 75 78 All 474007 1 14 90 BEARING 3 4 6 1210A 0 549 BEARING Camshaft Rear 75 78 All 474006 1 14 85 BEARING rr 8 1210A 0 553 PLUG Camshaft Bearing Hole In Cyl Block 75 78 All Blazer K Jimmy K 3997752 I 33 PLUG rear 8 1360A 0 603 ROD ASM Connecting 75 78 All Blazer K Jimmy K 361933 8 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 75 78 All Blazer K Jimmy K 3910555 A R N L BEARING UNIT std 8 18608 75 78 All Blazer K Jimmy K 3910556 A R 6 95 BEARING UNIT 001 US 8 18608 75 78 All Blazer K Jimmy K 3910557 A R 7 00 BEARING UNIT 002 U 8 18608 75 78 All Blazer K Jimmy K 3910558 A R 8 40 BEARING UNIT 010 U S 8 18608 75 78 All Blazer K Jimmy K 3910559 A R 8 40 BEARING UNIT 020 U 8 18608 0 623 BOLT Connecting Rod Bearing Cap 75 All Blazer K Jimmy K 14050532 16 30 BOLT 8 1870A 76 78 All Blazer K Jimmy K 3951631 I6 1 25 BOLT J 8 1870A 2 0 626 NUT Connecting Rod Bearing Cap Bolt 75 78 All Blazer K Jimmy K 3866766 A R 33 NUT I 24 x thick hex head 8 1900A 0 629 PlSTON ASSEMBLY with Pin Refer to Piston Chart for Model Application GMC 8 19208 NOTE Individual piston assemblies are available for warranty purposes and for replacement of pistons damaged when making repairs to angina 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 order Da not ship unit package quantity 75 78 All Blazer K Jimmy K 3891457 A R 56 25 PISTON ASM std 75 78 All Blazer K Jimmy K 3991458 A R 55 25 PISTON ASM 001 0 8 75 78 All Blazer K Jimmy K 3991450 A R 53 50 PISTON ASM 030 0 5 0 643 RING UNIT Piston Service Set GMC 8 19508 Original Equipment Type complete set for one cylinder per container 75 78 All Blazer K Jimmy K I 4009635 A R 15 40 RING UNIT std 8 19508 75 78 All Blazer K Jimmy K 360954 A R l5 40 RING UNIT 030 CLS 8 19508 0 646 CRANKSHAFT NOTE I When using on models with A I remove clutch pilot bearing 75 78 All Blazer K Jimmy K 3951527 1 348 00 CRANKSHAFT Note I 8 1450A 0 649 BEARING Crankshaft Clutch Pilot 75 78 All Blazer K Jimmy K 3752487 1 N L BEARING bush type 4 0 D x I 5 0200 0 659 BALANCER PULLEV Crankshaft 75 78 All Blazerr K Jimmy K 6272225 I 53 00 BALANCER 8 1450A 75 78 All Blazer K Jimmy K I 4023148 1 32 25 PULLEY 3 groove 7 I 8 1650A 0 662 WASHER Harmonic Balancer and Crankshaft Pulley k 75 78 All Blazer K Jimmy K 14001829 1 1 00 WASHER halancer u l D x P 4 0 D x q thk 8 1460 WAREHOUSING AND DISTRIBUTIONDIVISION OF GENERAL MOTORS CORPORA1 ION LT TRUCK 5I REV 2 83 069 0 51 9 0 662