Silvolite Piston Set, 1540HC.040

Silv-O-Lite Piston - Pontiac 153ci/2.5L (L4)

Hypereutectic. 3.100" diameter recess.220" deep. Coated skirts.

Sold As: Sold as a set, priced per set

Engine Manufacturer: Pontiac

Engine Family: GM L4

OE Cross Reference: 10010404

Engine Displacement (Liters): 2.5

Engine Displacement (cubic inches): 153

Piston Head Type: Dish

Crown (cc): +20.8cc

Compression Ratio: 8.5

Top Land: 0.285

Pin Type: Press

Top Compression Ring Thickness IN: .0781"

Compression Height IN: 1.57

Second Compression Ring Thickness IN: .0781"

Bore Diameter MM: 101.6

Compression Height MM: 39.9

Piston Pin Outside Diameter IN: 0.927

Oil Ring Thickness IN: .1875"

Piston Pin Outside Diameter MM: 23.5

Oversizes: STD, .020, .030, .040, .060, .065

Crown Type: DISH

Bore Diameter IN: 4

Oversize: .040"

Oversized: Yes

Year From: 1979

Base Number: 1540HC

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

Year Range: 1979-1986

Pin Configuration: Offset

Pin Number: 0927x300C

Year To: 1986

Piston Material: Cast 390 Hypereutectic Alloy