| Block Height | 8.18 |
| Fitment | Engine Specific |
| Block Height | 9.48 |
| Bore | 4.125 |
| CID | 331 |
| CID | 427 |
| CID | 438 |
| Comp Height | 1.23 |
| Comp Ratio @ 56cc | 12.5:1 |
| Comp Ratio @ 56cc | 15.9:1 |
| Comp Ratio @ 56cc | 16.2:1 |
| Comp Ratio @ 60cc | 11.8:1 |
| Comp Ratio @ 60cc | 14.9:1 |
| Comp Ratio @ 60cc | 15.3:1 |
| Comp Ratio @ 64cc | 11.1:1 |
| Comp Ratio @ 64cc | 14.1:1 |
| Comp Ratio @ 64cc | 14.4:1 |
| Dome Volume | 6.5 |
| Gram Weight | 449 |
| Oversize | STD |
| Rod | 5.4 |
| Rod | 6.2 |
| Rod | 6.25 |
| Stroke | 3.1 |
| Stroke | 4 |
| Stroke | 4.1 |