Icon Premium Piston Set, IC631.STD

ICON Forged Piston - Pont 455 Big Bore Rod 6.8 Flat Top +15.4cc

Centered pin,.990 pin for use with aftermarket rods. Standard bore for this piston is considered 4.350. Ring set 4320BD8.035 for STD and.005, 4320BD8.040 for.010.

Sold As: Piston Set

Engine Manufacturer: Pontiac

Engine Family: Pontiac V8

Engine Displacement (Liters): 8.3

Engine Displacement (cubic inches): 505

Bore Size (in): 4.35

Bore Size (mm): 110.5

Piston Head Type: Flat

Crown (cc): +15.4cc

Compression Ratio: 50-14.4, 65-12.2, 72-11.5, 87-10.1

Top Land: 0.386

Pin Type: Press or Floating

Lock: PRG110-3

Rod (in): 6.8

Pin Diameter (mm): 25.1

OE Deck Height: 10.25

Oversized: No

Piston Material: Forged 2618 Alloy

Pin Diameter (in): 0.99

Oversize: STD

Bore Diameter MM: 110.5

Compression Height IN: 1.305

Compression Height MM: 33.1

Bore Diameter IN: 4.35

Ring Pack: 1/16, 1/16, 3/16

Exhaust Valve Depth/Diameter: .336/2.012

Pin Number: .990x2.750

Stroke (in): 4.25

Rod (mm): 172.72

Make for Engine Family: General Motors

Intake Valve Depth/Diameter: .334/2.508

Pin Configuration: Centered

Base Number: IC631

Year Range: -

Oversizes: STD.005.010

Stroke (mm): 108

Crown Type: FLAT TOP 2V

Alloy: 2618