Description
| Bore – Actual: | 4.030 |
| Bore – Oversize: | 0.030 |
| Compression Height: | 1.425 |
| Compression Ratio – Actual: | 10.3:1 @ 70cc |
| Cylinder Head: | Chevrolet 23 |
| Piston Head Type: | Flat Top |
| Piston Pin Diameter: | 0.927 |
| Ring Set Included: | JG31F8-4030-2 |
| Rod Length: | 5.700 |
| Stroke: | 3.750 |
| Weight – Nominal: | 434 |
