0 623 BOLT Connecting Rod Bearing Cap Ser 10 thru 60 6 cyl 24 x 2 3836670 12 Ser 10 thru 60 283 1 24 X 1 4 3703530 16 Ser 70 80 348 24 x 2 knurled shank 3732718 16 NOTE Previously released 0 626 NUT Connecting Rod Bearing Cap Bolt Ser 10 thru 60 283 1 24 3703531 16 Ser 70 80 348 24 4 4 839103 12 NOTE Previously released 0 629 PISTON ASSEMBLY with Pin STD 001 O S 020 O S 030 O S 040 O S Ser 10 thru 50 6 cyl r 3707453 3707473 3707454 3707455 3707456 6 Ser 10 thru 50 283 3739886 3739888 3739890 3739892 3739894 8 Ser 60 6 cyl 3758650 3758651 3758652 3758653 3758654 6 Ser 60 283 3758663 3758664 3758665 3758666 3758667 8 Ser 70 80 348 3752631 3752632 3752633 3752634 3752635 8 NOTE Previously released 0 636 PIN Piston STD 0015 O S 003 O S 005 0 5 Length Ser 10 thru 50 6 cyl 3701538 3703686 3704881 3704882 3 6 Ser 60 6 cyl 3702451 3707495 3707496 3707497 311 6 NOTE Previously released 0 643 RING Piston Production Type complete set for one engine per container STD 020 O S 030 O S 040 O S Ser 10 thru 50 235 3748591 3748592 3748593 3748594 1 Sen 10 thru 60 283 3738901 3738902 3738903 3738904 1 Ser 60 261 3720212 3748597 3748598 3720216 1 Ser 70 80 348 3750538 3750539 3750541 3750543 1 Service Type complete set for one engine per container STD 020 O S 030 O S 040 O S Ser 10 thru 50 235 3713002 3713003 3713004 3713005 1 Ser 10 thru 60 283 3747539 3747549 3747558 3747567 1 Ser 60 261 3731676 3731681 3731685 3731689 1 Ser 70 80 348 3755462 3755463 3755464 3755465 1 NOTE Previously released 0 646 CRANKSHAPT ASSY Ser 10 20 283 w P G forged 3727449 3742333 1 Ser 10 thru 50 283 exc 4 WD P G thin hd piston forged 3735236 3742332 1 Ser 10 thru 50 6 cyl Ser 60 6 cyl exc A O H B P forged on No 5 arm 1 1 1 3701486 1 Ser 60 w A O H B 6 cyl 3770326 1 Ser 60 8 cyl 3772064 1 Ser 70 80 348 forged 3733223 3741641 1 NOTE Previously released 0 649 BEARING Crankshaft Clutch Pilot Ser 10 thru 60 bush type 11 1 D x 1 O D x 3752487 1 Ser 70 80 348 6 x 1 O D x 1 954610 1 NOTE Previously released 1 Chevrolet Motor TRUCK MODEL CATALOG General Motors Corporation