| Block Height | 9 |
| Fitment | Engine Specific |
| Bore | 4.165 |
| CID | 382 |
| CID | 409 |
| Comp Height | 1.125 |
| Comp Ratio @ 58cc | 15.3:1 |
| Comp Ratio @ 58cc | 16.3:1 |
| Comp Ratio @ 64cc | 13.9:1 |
| Comp Ratio @ 64cc | 14.8:1 |
| Comp Ratio @ 76cc | 11.8:1 |
| Comp Ratio @ 76cc | 12.5:1 |
| Dome Volume | 13 |
| Gram Weight | 468 |
| Oversize | 0.04 |
| Rod | 6 |
| Rod | 6.125 |
| Stroke | 3.5 |
| Stroke | 3.75 |