| Block Height | 9 |
| Fitment | Engine Specific |
| Bore | 4.155 |
| CID | 380 |
| CID | 407 |
| Comp Height | 1.125 |
| Comp Ratio @ 58cc | 11.7:1 |
| Comp Ratio @ 58cc | 12.5:1 |
| Comp Ratio @ 64cc | 10.9:1 |
| Comp Ratio @ 64cc | 11.6:1 |
| Comp Ratio @ 76cc | 10.2:1 |
| Comp Ratio @ 76cc | 9.6:1 |
| Dome Volume | -5 |
| Gram Weight | 424 |
| Oversize | 0.03 |
| Rod | 6 |
| Rod | 6.125 |
| Stroke | 3.5 |
| Stroke | 3.75 |