| Engine Family | Big Block Chevy 24° |
|---|---|
| CID/Ltr | 489/8.0 |
| Bore Inch | 4.280 |
| Bore mm | 108.71 |
| Stroke Inch | 4.250 |
| Stoke mm | 107.95 |
| Rod Length | 6.385 |
| Comp Dist | 1.270 |
| Crown Volume | 48.5cc |
| CR 1 | 14.8 @ 112cc |
| CR 2 | 13.5 @ 118cc |
| CR 3 | 12.6 @ 124cc |
| Alloy | 2618 |
| Weight | 616 |
| Pin | 0.990 |
| Oil Rails Included | N/A |
| Top Ring | 1.5mm |
| 2nd Ring | 1.5mm |
| Oil Ring HT | 3.0mm |
| Piston Style | Flat Top, one valve relief |
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