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420 GM 454 V8 1987-1989 - Serial 0A398941 Thru 0B622418 - Crankshaft - Pistons - Connecting Rods

Section Drawing: (Hover or click to view larger)

Untitled Document
Ref. OEM Part # Hardin # Mallory # GLM # Other # Description Num Req. Superseded From Special Notes
1 737-5536T         PISTON ASSEMBLY, Standard 8 737-5536 This Part is No Longer Available SN# 0A398941 THRU 0D725499
1 737-850477T         PISTON ASSEMBLY, Standard 8 737-811565 This Part is No Longer Available SN# 0D725500 THRU 0D937011
1 737-5537         PISTON ASSEMBLY, .030 Oversize 8   This Part is No Longer Available SN# 0A398941 THRU 0D725499
1 737-827654         PISTON ASSEMBLY, .030 Oversize 8 737-811603 This Part is No Longer Available SN# 0D725500 THRU 0D937011
2 39-67127         RING SET, Piston - Standard 8
SN# 0A398941 THRU 0D725499
2 39-827651T         RING SET, Piston - Standard 8 39-823098 SN# 0D725500 THRU 0D937011
2 39-67128         RING SET, Piston - .030 Oversize 8   This Part is No Longer Available SN# 0A398941 THRU 0D725499
2 39-850447         RING SET, Piston - .030 Oversize 8 39-823099 SN# 0D725500 THRU 0D937011
3/4 23-818473001         BEARING SET, Main - Standard 1 23-818473
3/4 23-818474         BEARING SET, Main - .001 Undersize AR

3/4 23-818475         BEARING SET, Main - .002 Undersize AR

3/4 818476001         BEARING SET, Main - .010 Undersize AR 23-818476
3/4 23-818477         BEARING SET, Main - .020 Undersize AR

5 17-843378         PIN, Dowel (.250) 1 17-35312
6 26-14756         SEAL, Oil 1
SN# 0A398941 THRU 0D725499 1
6 26-811554         SEAL, Oil 1
SN# 0D725500 THRU 0D937011 1
7 230-5534         FLYWHEEL 1   This Part is No Longer Available SN# 0A398941 THRU 0D725499
7 230-8115631         FLYWHEEL 1 230-811563 SN# 0D725500 THRU 0D937011
8 10-845757         SCREW, (.437-20 x 1.00) 6 10-49845
10 860125T         DRIVE PLATE 1 47607A1
11 10-35091         SCREW, (.375-16 x 1.00) 6

12 13-35048         LOCKWASHER, (.375) 6

13 614-8M0084554         CONNECTING ROD ASSEMBLY 8 614-9641
14 10-19234         SCREW, (.437-20) 16

15 11-37493         NUT, (.375-24) 16
No longer made, limited availability
16 23-85726001         BEARING SET, Connecting Rod - Standard 8 23-85726
16 23-85727         BEARING SET, Connecting Rod - (.001 Undersize) AR

16 23-85728         BEARING SET, Connecting Rod - (.002 Undersize) AR   This Part is No Longer Available
16 23-85691         BEARING SET, Connecting Rod - (.010 Undersize) AR

16 23-85729         BEARING SET, Connecting Rod - (.020 Undersize) AR

17 429-5880         CRANKSHAFT 1   This Part is No Longer Available SN# 0A398941 THRU 0D725499
17 429-811552         CRANKSHAFT 1
SN# 0D725500 THRU 0D937011
18 28-34466         KEY, Crankshaft 2
SN# 0A398941 THRU 0D725499
18 28-845607         KEY, Crankshaft 2 28-811558 SN# 0D725500 THRU 0D937011
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