ENGINE 0 629 PISTON Engina C n t 72 Y 350 EXC SP I I PER 3991488 1 48 50 PISTON STD 72 Y 350 EXC SP H PER 3991489 1 44 00 PISTON 001 0 5 72 Y 350 EXC SP H PER 3961491 1 44 00 PISTON 030 0 5 72 Y 454 EXC SP H PER 353058 1 6F 50 PISTON 5TD 4 24B7 4 2497 DIA 72 Y 454 EXC SP H PER 353059 1 68 50 PISTON STD HI LIMIT 4 2497 4 2507 DIA 72 Y 454 EXC SP I I PER 353061 1 68 50 PISTON 030 0 5 73 80 Y 350 EXC SP H PER 329238 1 50 00 PISTON 030 0 5 73 80 Y 350 EXC SF H PER 6271097 1 50 00 PISTON 5TD 3 9998 4 0008 DIA 73 80 Y 350 EXC SP H PER 6271098 1 50 00 PISTON STD HI LIMIT 4 0008 4 0018 I DIA 73 Y 454 353058 1 58 50 PISTON 5T0 4 2487 4 2497 DIA 73 Y 454 I 353059 1 68 50 PISTON STD HI LIMIT 4 2497 4 2507 DIA 73 Y 454 353061 1 68 50 PISTON 030 0 5 74 77 Y 350 W SP H PER 336754 I 58 50 PISTON STD 3 9959 3 9969 DIA 74 Y 454 340206 1 68 50 PISTON STD 74 Y 454 340208 1 68 50 PISTON 030 0 5 78 80 Y 350 W SP H PER 474190 1 71 00 PISTON 5TD 3 9980 3 9990 DIA 80 Y 305 364702 1 39 25 PISTON STD 3 7358 3 7368 I 80 Y 305 364703 1 39 25 PISTON STD HI LIMIT 3 7368 3 7378 80 Y 305 364704 1 41 75 PISTON 030 0 5 81 Y 350 329238 1 50 00 PISTON 030 0 5 81 Y 350 6271097 1 50 00 PISTON 5TD 3 9998 4 0008 DIA 81 Y 350 6271098 1 50 00 PISTON STD HI LIMIT 4 0008 4 0018 DIA 82 Y 5 7 8 474190 8 71 00 PISTON STD 3 9980 3 9990 DIA 82 Y 5 7 8 474191 8 71 00 PISTON STD HI LIMIT 3 9990 4 0000 DIA I 82 Y 5 7 B 474192 8 71 00 PISTON 030 0 5 0 639 RETAINER Engine Piston Pin 67 09 Y 427 W H D AL CYL AND CASE 3942423 16 1 55 RETAINER 69 Y 350 W 4 SPD SP H PER 3946848 16 54 RETAINER 0 643 RING KIT Engine Piston NOTE 1 INDIVIDUAL CYLINDER REPLACEMENT UNIT ONLY NOTE 2 CROMFLEX RING SET HAVING CHROME PLATED OIL RINGS TOF COMFRESSION RING AND CHROME PLATED RAIL FOR MIDDLE COMPRESSION RING 57 56 Y EXC F I W H L CAM 328503 1 13 70 RING KIT 030 0 5 NOTE 1 57 61 Y 283 326400 1 N L RING KIT STD NOTE 2 57 61 Y W F I r I L CAM 328503 I 13 70 RING KIT 030 0 5 NOTE 1 59 61 Y EXC H L CAM 328503 1 13 70 RING KIT 030 0 5 NOTE 1 59 61 Y W DUAL 48C H L CAM 328503 1 13 70 RING KIT 030 0 5 NOTE 1 62 61 Y 327 350 328506 8 N L RING KIT STD NOTE 1 62 81 Y 327 350 328516 8 14 95 RING KIT 030 0 5 NOTE 1 65 Y 396 W SP H PER 328521 1 14 85 RING KIT STD NOTE 1 65 Y 396 W SP H PER 328526 1 15 90 RING KIT 030 0 5 NOTE 1 66 69 Y 427 EXC H D ALUM CYL AND CASE 475987 1 N L RING KIT STD NOTE 1 66 69 Y 427 EXC H D ALUM CYL AND CASE 475989 1 14 85 RING KIT 030 0 5 67 68 Y 427 W H D 3993828 1 18 45 RING KIT STD 67 68 Y 427 W H D 3993830 1 18 45 RING KIT 030 0 5 67 98 Y 427 W H D 3993831 1 18 45 RING KIT 060 0 5 69 Y 427 W H D ALUM CYL AND CASE 3993828 1 18 45 RING KIT STD 69 Y 427 W H D ALUM CYL AND CASE 3993830 1 18 45 RING KIT 030 0 5 70 72 Y 454 EXC IH J 475987 1 N L RING KIT STD NOTE 1 70 72 Y 454 EXC I I D 475989 1 14 85 RING KIT 030 0 5 73 74 Y 454 475987 1 N L RING KIT STD NOTE 1 73 76 Y 454 475989 1 14 85 RING KIT 030 0 5 i 80 Y 305 370409 1 N L RING KIT STD NOTE 1 80 Y 305 370419 1 13 75 RING KIT 030 0 5 NOTE 1 82 Y 5 7 8 328506 8 N L RING KIT STD NOTE 1 82 Y 5 7 8 L 328516 8 14 95 RING KIT 030 0 5 NOTE 1 0 646 CRANKSHAFT Engine NOTE 1 WHEN USED ON A T IT WILL BE NECESSARY TU REMOVE THE PILOT BEARING NOTE 2 SOME EARLY 7965 327 MODELS USE 1967 ENGINES BUILT TO 1968 SPEC IIEFER T0 NOTE 2 IN GROUP 0 033 NOTE 3 WITH STANDARD SIZE CRANKSHAFT MAIN BEARING JOURNALS AS FOLLOWS POSITION 1 2 3 4 2 299 INCH DIA AND REAR POSITION 5 2 430 INCH DIA 7 WAREHOU5ING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET 14A REV 12 83 0 15 0 629 0 646 E 2