Mercruiser
V8  454 / 7.4L

Chevrolet
STD. BORE SIZE

4.25 / 103.95mm



COMP. HEIGHT

1.645



PIN DIAMETER

0.9898
offset



COMPRESSION RATIO(s)


Part
Number
3458HC


SIZE AVAILABILITY


VIN CODE



RING PACK

2-5/64
1-3/16

NOTES

Hypereutectic coated marine engine. .133" high dome with 1 valve relief.



WRIST PIN P/N

LOCK PIN P/N

APPROX. OVERALL LENGTH


RECOMMENDED FINISHED BORE DIAMETERS

PISTON MAJOR AXIS MUST BE MEASURED PERPENDICULAR TO THE PIN CENTERLINE AT 70 DEGREES FARENHEIT 3.710" DOWN FROM THE PISTON HEAD



Piston
Oversize		 Piston Major Axis
Diameter +.0000/-.0005		 Recommended Finished
Bore Diameter


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