Engine Brand: Pontiac
Engine Family: Pontiac Late
Engine Size: 389
With/Without Rings: Without Rings
Cylinder Bore Size: 4.160 in - 105.58 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.710
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 3.750 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.73 to 1 |
87cc | 9.12 to 1 |
124cc | 6.97 to 1 |
Engine Brand: Pontiac
Engine Family: Pontiac Late
Engine Size: 389
With/Without Rings: Without Rings
Cylinder Bore Size: 4.160 in - 105.58 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.710
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 3.750 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.73 to 1 |
87cc | 9.12 to 1 |
124cc | 6.97 to 1 |