| Engine Family | Pontiac 455 |
|---|---|
| CID/Ltr | 468/7.7 |
| Bore Inch | 4.185 |
| Bore mm | 106.30 |
| Stroke Inch | 4.250 |
| Stoke mm | 107.95 |
| Rod Length | 6.800 |
| Comp Dist | 1.275 |
| Crown Volume | -7cc |
| CR 1 | 12.3 @ 72cc |
| CR 2 | 11.3 @ 80cc |
| CR 3 | 10.6 @ 84cc |
| Alloy | 4032 |
| Weight | 491 |
| Pin | 0.980 |
| Oil Rails Included | Yes |
| Top Ring | 1.5mm |
| 2nd Ring | 1.5mm |
| Oil Ring HT | 3.0mm |
| Piston Style | Flat Top, two valve reliefs |
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