Description
| Block Height: | 9.000 |
| Bore – Actual: | 4.145 |
| Bore – Oversize: | .020 |
| Compression Height: | 1.187 |
| Compression Ratio – Actual: | 12.0 @ 76cc |
| Cylinder Head: | Chevrolet 20/30 23 |
| Displacement: | 391 |
| Dome Volume: | 12.9 |
| Piston Head Type: | Dome |
| Piston Pin Diameter: | 0.927 |
| Ring Set Recommended: | J10008-4145-5 |
| Rod Length: | 6.000 |
| Stroke: | 3.625 |
| Weight – Nominal: | 463 |
