June 17, 2019



7. GM 454/425 Marinized Airboat Engine



Our 454 HO Marinized Airboat Engine Comes With The Intake Manifold, Marine Short Water Pump, Dip Stick & Tube, Harmonic Balancer, 14" Flywheel and  7 Qt. Marine Oil Pan. It Offers You An Incredible Performance and Value.


GM 454/425 Marinized Airboat Engine

Horsepower:
425 @ 5250 RPM
Torque:
500 @ 3250 RPM
Max. Recommended RPM:
5500
Compression Ratio:
8.75:1
Block:
12550307 Four Bolt main, cast iron
Crankshaft:
14096983 Forged steel
Connecting Rods:
10198922 Forged steel
Pistons:
10215228 Forged aluminum
Piston Rings:
12523921
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"
Oil Pump Drive:
3860365 Shaft and 3764554 Sleeve
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

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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