Single Flat Top Piston for 70-83 GM/Chevrolet 7.4L/454 | .030" Oversized

• Pin Dia.0.9898
• Comp. Ht1.625
• Bore_mm107.95
• Oil Ring3/16
• Bore Inch4.250
• 2nd Ring5/64
• Top Ring5/64

Category	Make		User Engine	Year Range	Notes

MARINE	GM		7.4L / 454 OHV V8 16V Chev. Big Block 4.250" Bore	High Perf.	Mark IV. Flat top. 1.627" CH. Hyper. Coated skirt. Use R42558 or M42558 rings.
TRUCK, VAN, SUV	GM, CHEVROLET		7.4L / 454 OHV V8 16V Chev. 4.250" Bore 71-00	71-83	Flat top. 1.627" CH. Hyper. Coated skirt. Use R42558 or M42558 rings.
Car	GM		7.4L / 454 OHV V8 16V Chev. 4.250" Bore 70-76	70-76	Flat top. 1.627" CH. Hyper. Coated skirt. Use R42558 or M42558 rings.