Description
| Bore – Actual: | 4.125 |
| Bore – Oversize: | STD |
| Compression Height: | 1.062 |
| Compression Ratio – Actual: | 11.0:1 @ 70cc |
| Cylinder Head: | Chevrolet 20/30 23 |
| Piston Head Type: | Flat Top |
| Piston Pin Diameter: | 0.927 |
| Ring Set Included: | JG31F8-4125-2 |
| Rod Length: | 6.000 |
| Stroke: | 3.875 |
| Weight – Nominal: | 390 |
