Description
| Block Height: | 10.175 |
| Bore – Actual: | 4.610 |
| Bore – Oversize: | .010 |
| Compression Height: | 1.140 |
| Compression Ratio – Actual: | 14.5 @ 77cc |
| Cylinder Head: | Big Chief 12 DEG/14 DEG |
| Displacement: | 634 |
| Dome Volume: | -7.3 |
| Piston Head Type: | Flat Top |
| Piston Pin Diameter: | 0.990 |
| Ring Set Recommended: | JG73F8-4610-5 |
| Rod Length: | 6.660 |
| Stroke: | 4.750 |
| Weight – Nominal: | 585 |
