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7.4L Bravo (Gen 4) GM 454 V-8 1988-1991 - Serial 0B771113 Thru 0D603117 - Crankshaft, Pistons and Connecting Rods
Section Drawing: (Hover or click to view larger)
Other Sub-Sections:
- Alternator (Mando)
- Alternator (Motorola #8MR2039K)
- Alternator (Prestolite #8EM2003KA)
- Audio Warning System
- Carburetor
- Carburetor and Linkage
- Crankshaft, Pistons and Connecting Rods
- Cylinder Block and Camshaft
- Cylinder Head and Rocker / Valve Cover
- Distributor and Ignition Components
- Engine Mounting (Cast Bracket)
- Exhaust Manifold and Elbow / Riser (Cast Iron)
- Exhaust Plate
- Exhaust System
- Flame Arrestor (New Design)
- Flame Arrestor (Old Design)
- Flywheel Housing
- Fuel Pump and Fuel Filter
- Intake Manifold and Front Cover
- Oil Filter and Adapter
- Oil Pan & Oil Pump (Cast Pan)
- Oil Pan & Oil Pump (Stamped Pan)
- Power Steering Components
- Sea Water Pump
- Shift Bracket
- Starter and Alternator
- Thermostat Housing (New Design)
- Thermostat Housing (Old Design)
- Wire Harness, Electrical and Ignition
| Ref # | Current Part Number | Description | Superceded From | Status | Quantity Used |
| 1 | 879194035 | PISTON ASSEMBLY (STANDARD) | 6523 | SS/NLA | 8 |
| 1 | 6615T1 | PISTON ASSEMBLY (.030 O.S.) | 6615 | SS/NLA | AR |
| 2 | 67127 | RING SET, Piston - Standard | NLA | 8 | |
| 2 | 67128 | RING SET, Piston - .030 Oversize | NLA | AR | |
| 44989 | 818473001 | BEARING SET, Main - Standard | 818473 | SS/ACT | 1 |
| 44989 | 818474 | BEARING SET, Main - .001 Undersize | NLA | AR | |
| 44989 | 818475 | BEARING SET, Main - .002 Undersize | NLA | AR | |
| 44989 | 818476001 | BEARING SET, Main - .010 Undersize | 818476 | SS/ACT | AR |
| 44989 | 818477 | BEARING SET, Main - .020 Undersize | ACT | AR | |
| 5 | 843378 | PIN, Dowel (1/4 In. Diameter) (1/4" DIA.) | 35312 | SS/ACT | 1 |
| 6 | 8M0062773 | SEAL | 14756 | SS/ACT | 1 |
| 7 | 8M0084209 | FLYWHEEL | 6540 | SS/NLA | 1 |
| 8 | 8M0214958 | SCREW, (.437-20 x 1.00) | 49845 | SS/ACT | 6 |
| 9 | 18643A7 | COUPLING ASSEMBLY | 18643A2 | SS/ACT | 1 |
| 10 | 269011 | --BUMPER (OLD DESIGN) | 26901 | SS/ACT | 3 |
| 10 | 18644 | --BUMPER, Rubber (NEW DESIGN) | ACT | 3 | |
| 11 | 8M0204643 | --SCREW, (.375-16 x 1.12) | 14883 | SS/ACT | 3 |
| 12 | 13510 | --WASHER | ACT | 3 | |
| 13 | 8M0098795 | COUPLING ASSEMBLY (Round) | 812964A2 | SS/ACT | 1 |
| 14 | 37612 | --SCREW, (.375-16 x 1.250), Round | ACT | 6 | |
| 15 | 20572 | --WASHER, (.390 x .750 x .093), Round | ACT | 6 | |
| 16 | 8M0030663 | CONNECTING ROD | 3553 | SS/ACT | 8 |
| 17 | 52192 | --BOLT | NLA | 16 | |
| 18 | 37493 | --NUT, (.375-24) | ACT | 16 | |
| 19 | 85726001 | BEARING SET, Connecting Rod - Standard | 85726 | SS/ACT | 8 |
| 19 | 85727 | BEARING SET, Connecting Rod - (.001 Undersize) | NLA | AR | |
| 19 | 85728 | BEARING SET, Connecting Rod - (.002 Undersize) | NLA | AR | |
| 19 | 85691 | BEARING SET, Connecting Rod - (.010 Undersize) | ACT | AR | |
| 19 | 85729 | BEARING SET, Connecting Rod - (.020 Undersize) | ACT | AR | |
| 20 | 6612 | CRANKSHAFT | NLA | 1 | |
| 21 | 34466 | KEY | ACT | 2 |