Engine Brand: Pontiac
Engine Family: Pontiac Early and Late
Engine Size: 421
With/Without Rings: Without Rings
Cylinder Bore Size: 4.120 in - 104.57 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.585
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 4.000 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Early and Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.32 to 1 |
87cc | 8.97 to 1 |
124cc | 6.96 to 1 |
Engine Brand: Pontiac
Engine Family: Pontiac Early and Late
Engine Size: 421
With/Without Rings: Without Rings
Cylinder Bore Size: 4.120 in - 104.57 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.585
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 4.000 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Early and Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.32 to 1 |
87cc | 8.97 to 1 |
124cc | 6.96 to 1 |