| Engine Family | LS7 12° |
|---|---|
| CID/Ltr | 429/7.0 |
| Bore Inch | 4.13 |
| Bore mm | 104.9 |
| Stroke Inch | 4 |
| Stoke mm | 101.6 |
| Rod Length | 6.077 |
| Comp Dist | 1.163 |
| Crown Volume | -4.1cc |
| CR 1 | 12.5 @ 64cc |
| CR 2 | 11.9 @ 66cc |
| CR 3 | 11.1 @ 70cc |
| Alloy | 4032 |
| Weight | 469 |
| Pin | 0.927 |
| Oil Rails Included | Yes |
| Top Ring | 1.5mm |
| 2nd Ring | 1.5mm |
| Oil Ring HT | 3.0mm |
| Piston Style | Flat Top, two valve reliefs |
AutoTec, LS7 12°, Flat Top, two valve reliefs, 4.130 Bore 4.000 Stroke 1.163 Comp HT
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