March 19, 2024



9. GM 502/450 Marinized Airboat Engine

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Our 454 HT Marinized Airboat Engine Comes With, Oil Filter, Valve Train, Valve Covers, Timing Set, And Harmonic Balancer, Dip Stick & Tube, Marine Short Water Pump (Not Shown) and a 7 qt. Marine Oil Pan

GM 502/450 Marinized Airboat Engine

Horsepower:
450 @ 5250 RPM
Torque:
550 Ft. Lbs. @ 3500 RPM
Max. Recommended RPM:
5500
Compression Ratio:
8.75:1
Block:
10237292 Cast iron - Four bolt main caps
Crankshaft:
10183723 Forged steel
Connecting Rods:
10198922 Forged steel - shot peened, 7/16" bolts
Pistons:
12533507 Forged aluminum
Piston Rings:
12524293
Camshaft:
24502611 Hydraulic roller
Lift .510" I, .540" E.
Duration @ .050: 211° I, 230° E.
Timing Chain:
3891519 Single Roller

Cylinder Heads:
14096801 Cast iron 118cc combustion chambers
Intake Valves:
14097045 2.19"
Exhaust Valves:
14097049 1.88"
Valve Springs:
14097002
Rocker Arms:
12523976 1.7:1
Flex Plate:
10185034 14"
Torsional Damper:
10216339 8"
Intake Manifold:
3933163 Aluminum with Holley flange
Valve Lash:
Net lash
Sparik Plugs:
MR43T Gap .035 Rapid Fire #10 Gap .035
Fuel:
92 Octane
Ignition Timing:
10° BTDC @ 700 RPM.  No More than 32o Total Advance Wide Open with vacuum advance disconnected

Information may vary with application. All specifications listed are based on the latest product information available at the time of publication. The right is reserved to make changes at any time without notice.


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