Silvolite Piston Set, 3458HC.020

Silv-O-Lite Piston - GM 454ci/7.4L (V8)

Hypereutectic.133 high dome. 1 valve relief. Coated skirts. Centered pin. Mercury Marine engine.

Sold As: Sold as a set, priced per set

Engine Manufacturer: GM

Engine Family: Chevy Big Block Mark IV

Engine Displacement (Liters): 7.4

Engine Displacement (cubic inches): 454

Piston Head Type: Dome

Crown (cc): -14cc

Top Land: 0.285

Pin Type: Press

Crown Type: DOME

Piston Material: Cast 390 Hypereutectic Alloy

Bore Diameter IN: 4.25

Piston Pin Outside Diameter IN: 0.99

Second Compression Ring Thickness IN: .0781"

Piston Pin Outside Diameter MM: 25.1

Top Compression Ring Thickness IN: .0781"

Oil Ring Thickness IN: .1875"

Compression Height IN: 1.645

Bore Diameter MM: 108

Compression Height MM: 41.7

Year To: 2007

Pin Configuration: Offset

Base Number: 3458HC

Oversize: .020"

Ring Pack: 5/64, 5/64, 3/16

Pin Number: 0990x230A

Year Range: 1970-2007

Oversizes: STD, .020, .030, .040, .060

Year From: 1970

Oversized: Yes