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496 Mag HO Model - Serial 0M025000 Thru 0M687143 - Block-Camshaft And Pistons
Section Drawing: (Hover or click to view larger)
Other Sub-Sections:
- Block-Camshaft And Pistons
- Block-Crankshaft, Oil Pump, And Front Cover
- Closed Cooling System
- Cylinder Head
- Drive Reservoir And Bracket
- Engine Cover
- Engine Mounts
- Exhaust Manifold (W- Water Rail), Elbow, And Riser
- Exhaust Manifold (WO Water Rail), Elbow, And Riser
- Flywheel Housing
- Fuel Filter And Boost Pump
- Fuel Pump And Fuel Cooler
- Gasket Set Components (27-883231A1), Engine
- Gasket Set Components (27-889924A01), Overhaul
- Intake Manifold
- Lifting Brackets And Wiring Harness
- Mercathode
- Oil Pan And Drain System
- Pcm And Bracket
- Power Steering
- Raw Water Cooling System 1(0M095324 And Below)
- Raw Water Cooling System 2(0M095325 And Up)
- Remote Oil System
- Seawater Pump
- Shift Bracket (Digital Throttle-Shift)
- Shift Bracket (Mechanical Shift)(0M659999 And Below)
- Shift Bracket (Mechanical Shift)(0M660000 And Up)
- Smartcraft Sensors And Harnesses
- Starter And Alternator
- Throttle Body (Digital Throttle-Shift)
- Throttle Body (Mechanical Throttle-Shift)
- Trim Pump Assembly
- Water Drain System
| Ref. | OEM Part # | Hardin # | Mallory # | GLM # | SEI # | Description | Num Req. | Superceded From | Special Notes |
| - | 865752A01 | LONG BLOCK | 1 | 862762A1 | This Part is No Longer Available (Base) SN# 0M376087 & Below | ||||
| - | 865752A01 | LONG BLOCK | 1 | 863815A02 | This Part is No Longer Available (Base) SN# 0M376088 THRU 0M672040 | ||||
| - | 865752A01 | LONG BLOCK | 1 | 865273A01 | This Part is No Longer Available (Base)(GM Code 4XW) SN# 0M672041 & Up | ||||
| - | 865754A01 | LONG BLOCK | 1 | 862764A1 | (H.O.) SN# 0M376090 & Below | ||||
| - | 865754A01 | LONG BLOCK | 1 | 863817A02 | (H.O.) SN# 0M376091 THRU 0M667237 | ||||
| - | 865754A01 | LONG BLOCK | 1 | 865275A01 | (H.O.)(GM Code 4XA) SN# 0M667238 & Up | ||||
| 1 | NSS | NOT SOLD SEPARATE, BLOCK-Engine | 1 | This Part is not sold separately (Order Longblock Assembly) 22,4,5,23 | |||||
| 2 | 22-48341 | PLUG, (.125-27 x .375), Oil Galley | 3 | 22,4,5,23 | |||||
| 3 | NSS | NOT SOLD SEPARATE, PLUG-Coolant Drain | 1 | This Part is not sold separately 22,4,5,23 | |||||
| 4 | 881669 | DRIVE, Oil Pump, Oil Pump | 1 | 22,4,5,23 | |||||
| 5 | 10-881595 | SCREW, (M6 x 21), Oil Pump | 1 | 22,4,5,23 | |||||
| 6 | 17-845758 | PIN, Dowel, Cylinder Head Locating | 4 | 22,4,5,23 | |||||
| 7 | 892617 | 676-9-29823 | SENSOR, Crankshaft Position | 1 | 881667 | 22,4,5,23 | |||
| 8 | NSS | NOT SOLD SEPARATE, SEAL-Crankshaft Position Sensor | 1 | This Part is not sold separately 22,4,5,23 | |||||
| 9 | 10-881595 | SCREW, (M6 x 21), Crankshaft Position Sensor | 1 | 22,4,5,23 | |||||
| 10 | 11-68219 | NUT, (#10-32) Stainless Steel | 1 | 22,4,5,23 | |||||
| 11 | 22-805563 | CONNECTOR, (.500 Inch NPTF To .500 Inch Inverted Flare) | 1 | 22,4,5,23 | |||||
| 12 | 878187 | 676-9-33502 | SENSOR ASSEMBLY, Knock | 2 | 22,23 | ||||
| 13 | 8M0068784 | SENDER ASSEMBLY, Oil Pressure | 1 | 87-815425T | |||||
| 14 | 22-48340 | PLUG, (.250-18 x .41), Oil Galley | 1 | 22,4,5,23 | |||||
| 14 | 22-36373 | PLUG, (.375-18 x .42), Pipe - Oil Galley | 2 | 22-34487 | 22,4,5,23 | ||||
| 14 | 22-48341 | PLUG, (.125-27 x .375), Oil Galley | AR | 22,4,5,23 | |||||
| 14 | 22-881568 | PLUG, Engine Coolant | 1 | 22,4,5,23 | |||||
| 14 | 22-881569 | PLUG, (.250-18 x .54), Engine Coolant | 1 | 22,4,5,23 | |||||
| 15 | 17-843378 | PIN, Dowel (1/4 In. Diameter) | 1 | 17-35312 | 22,4,5,23 | ||||
| 16 | 23-85684 | BEARING, Camshaft | 1 | 23-881659 | (pos 1) 22,4,5,23 | ||||
| 17 | 23-85684 | BEARING, Camshaft | 2 | 23-881660 | (pos 2 / 5) 22,4,5,23 | ||||
| 18 | 23-85684 | BEARING, Camshaft | 2 | 23-881661 | (pos 3 / 4) 22,4,5,23 | ||||
| 19 | 19-94140 | EXPANSION PLUG, Camshaft Bearing Hole | 1 | 22,4,5,23 | |||||
| 20 | 431-881627 | CAMSHAFT | 1 | (Base) 23,4 | |||||
| 20 | 431-881628 | CAMSHAFT | 1 | (H.O.) 22,5 | |||||
| 21 | 17-843378 | PIN, Dowel (1/4 In. Diameter) | 1 | 17-35312 | Camshaft Sprocket Location 22,4,5,23 | ||||
| 22 | 845941 | RETAINER, Camshaft | 1 | 22,4,5,23 | |||||
| 23 | 10-881588 | SCREW | 1 | 22,4,5,23 | |||||
| 24 | 43-881616 | SPROCKET, Camshaft | 1 | This Part is No Longer Available (Engine Block Code 1XW, 1XA,) 4,5 | |||||
| 24 | 884037 | SPROCKET, Camshaft | 1 | (Engine Block Code 2XW, 2XA, 3XA, 3XW) 4,5 | |||||
| 24 | 892640001 | SPROCKET, Camshaft | 1 | 892640 | (H.O.)(GM Code 4XA) SN# 0M667238 & Up 23 | ||||
| 24 | 892640001 | SPROCKET, Camshaft | 1 | 892640 | (Base)(GM Code 4XW) SN# 0M672041 & Up 22 | ||||
| 25 | 10-881570 | SCREW, (M8 x 25) | 3 | 22,4,5,23 | |||||
| 26 | 881626 | CHAIN, Camshaft Timing | 1 | 22,4,5,23 | |||||
| 27 | 735-881592002 | PISTON ASSEMBLY, Standard | 4 | 735-881592 | (Starboard) 22,4,5,23 | ||||
| 27 | 735-883515002 | PISTON ASSEMBLY, Standard | 4 | 735-883515 | (Port) 22,4,5,23 | ||||
| 27 | 735-881596 | PISTON ASSEMBLY, .030 Oversize | 4 | (Starboard) | |||||
| 27 | 735-881597002 | PISTON ASSEMBLY, .030 Oversize | 4 | 735-881597 | (Port) | ||||
| 28 | NSS | NOT SOLD SEPARATE, ROD-Connecting | 8 | This Part is not sold separately 22,4,5,23 | |||||
| 29 | 10-883917 | SCREW, Connecting Rod | 16 | 22,4,5,23 | |||||
| 30 | 11-883918 | NUT, Connecting Rod | 16 | 22,4,5,23 | |||||
| 31 | 39-881601 | RING KIT, Piston | 8 | (Standard) 22,4,5,23 | |||||
| 31 | 39-881602 | RING KIT, Piston | 8 | (.030 Over Size) | |||||
| 32 | 23-8832391 | BEARING, Connecting Rod | 8 | 23-883239 | 22,4,5,23 | ||||
| 33 | 22-881567001 | PLUG, Oil Galley | 4 | 22-881567 | 22,4,5,23 | ||||
| 34 | 22-48341 | PLUG, Oil Galley | 3 | 22-881598 | 22,4,5,23 | ||||
| 35 | 22-48341 | PLUG, (.125-27 x .375), Oil Galley | AR | 22,4,5,23 | |||||
| 35 | 22-36373 | PLUG, (.375-18 x .42), Pipe - Oil Galley | 2 | 22-34487 | 22,4,5,23 | ||||
| 35 | 22-48340 | PLUG, (.250-18 x .41), Oil Galley | 1 | 22,4,5,23 | |||||
| 36 | 883925 | 676-9-42601 | 602-WP2000 | PUMP, Circulating | 883514 | 22,4,5,23 | |||
| 37 | 27-881603 | GASKET, Circulating Pump | 2 | No longer made, limited availability 3,4,5,22 | |||||
| 38 | 862583 | PULLEY, Circulating Pump | 1 | 22,4,5,23 | |||||
| 39 | 10-4010716 | SCREW, (M8 x 16) | 4 | 22,4,5,23 | |||||
| 40 | 10-881576 | SCREW, (M10 x 65) | 3 | 22,4,5,23 | |||||
| 40 | 10-884036 | SCREW, (M10 x 95) | 1 | 22,4,5,23 | |||||
| 41 | 16-862915 | STUD, (.250-18/M10 Special), Knock Sensor | 2 | ||||||
| 42 | 11-826292 | NUT, (M10) Brass/Nickel Plated, Knock Sensor | 2 | ||||||
| 43 | 881879T11 | SENSOR, (0 - 100 PSI), Oil Pressure | 1 | 881879A6 | |||||
| 44 | 22-29085 | FITTING, Elbow (45 Degree) | 2 | ||||||
| 45 | 22-64013 | FITTING, (.375 Male To .125 Female) | 1 | ||||||
| 46 | 22-805059 | FITTING, Reducer Bushing | 1 | ||||||
| 47 | 13-26996 | LOCKWASHER, (#10) Stainless Steel | 1 | ||||||
| 48 | 22-38407 | PLUG, (.500-14), Pipe | 1 |