Silvolite Piston Set, 1639HC.030

Silv-O-Lite Piston - Oldsmobile 307ci/5.0L (V8)

Hypereutectic. Recessed.270" deep. Coated skirts.

Sold As: Sold as a set, priced per set

Engine Manufacturer: Oldsmobile

Engine Family: Oldsmobile V8

OE Cross Reference: 22527480R, 22527479L

Engine Displacement (Liters): 5

Engine Displacement (cubic inches): 307

Piston Head Type: Dish

Crown (cc): +15.5cc

Compression Ratio: 8

Top Land: 0.24

Pin Type: Floating

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

Second Compression Ring Thickness IN: .0781"

Compression Height IN: 1.605

Piston Pin Outside Diameter MM: 24.9

Piston Pin Outside Diameter IN: 0.98

Bore Diameter MM: 96.5

Compression Height MM: 40.7

Top Compression Ring Thickness IN: .0781"

Bore Diameter IN: 3.8

Oil Ring Thickness IN: .1875"

Oversize: .030"

Base Number: 1639HC

Oversized: Yes

Year Range: 1985-1990

Crown Type: DISH

Pin Configuration: Offset

Pin Number: 0908x300B

Piston Material: Cast 390 Hypereutectic Alloy

Lock: 128

Year To: 1990

Year From: 1985

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