1946 70 ENGINE ASSEMBLIES 0 629 PISTON ASSEMBLY with Pin C on t 427 cu in 4 2498 001 S 6 4 2498 t0 4 2503 S 7 4 2503 to 4 2508 it PISTON CHART STD 001 ID S 020 O S 030 O S 040 O S 41 63 AII 235 3707455 55 56 All 265 373 2021 54 62 All 261 3758650 55 62 AII 261 3758653 57 59 All 283 exc light duty 60 61 Ser 60 283 3758663 3758665 3758666 3758667 59 Ser 6 w light duty 283 60 63 Ser 40 50 283 3860407 3860426 62 68 AII 327 3816974 3816975 3816977 62 65 AII 348 3816650 38161551 3816647 3816649 62 65 AII 409 3816640 3816637 3816639 63 Ser 50 283 64 67 AII 230 283 3860407 3860413 3860426 63 70 AII 292 exc L P Gas 3794494 3794495 3794497 66 70 AII 250 exc L P Gas 3886048 3886049 3886051 66 70 AII 366 exc L P Gas 3886172 3886173 3886174 3886175 68 70 All 427 3893251 3893252 3940955 3893253 68 All 307 3927120 3927121 3927123 69 70 AII w L P Gas 366 3955294 3955295 3955296 3955297 69 70 AII w L P Gas 350 3947746 3947748 3947752 69 70 Ser 40 250 w L P Gas 3953798 3962006 69 70 All 292 w L P Gas 3962018 3962019 69 70 AII 350 exc L P Gas 3947786 3947787 3947788 3947789 STD STD STD 005 O S 020 O S 040 O S CYLS 1 2 CYLS 3 4 CYILS 5 6 ALL CYLS ALL CYLS ALL CYLS 65 66 AII D351 2464858 2464859 2464860 2472216 2464854 2464855 65 69 All D DH478 2472217 I 0 633 BUSHlNG NOZZLE Piston 62 69 All 4 53 6V 53 5116181 A R rod and pin bronze 1 0 D x 62 69 All 3 53 4 53 6V 53 5150140A R NOZZLE piston spray 0 636 PIN Piston A sro 01 8 003 0 s 00s 0 s Length 62 69 AII 3 53 4 53 6V 53 5116189 STD 001 CI S 002 O S 65 69 All D DH478 2448952 Y2448953 2448954 65 66 All D351 2451998 2451999 2452000 0 639 RETAINER RING Piston Pin A 62 69 All 3 53 4 53 6V 53 5180250A R 65 69 All D351 D DH478 2448951 12 RING retaining j GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM REV 5 79 0 23 0 629 0 639 r ifw V wwihwm V 1