| Engine Family | 318 Poly |
|---|---|
| CID/Ltr | 390/6.4 |
| Bore Inch | 3.94 |
| Bore mm | 100.08 |
| Stroke Inch | 4 |
| Stoke mm | 101.6 |
| Rod Length | 6.123 |
| Comp Dist | 1.457 |
| Crown Volume | -1.6cc |
| CR 1 | 10.9 @ 70cc |
| CR 2 | 10.3 @ 75cc |
| CR 3 | |
| Alloy | 4032 |
| Weight | Call |
| Pin | 0.984 |
| Oil Rails Included | N/A |
| Top Ring | 1/16" |
| 2nd Ring | 1/16" |
| Oil Ring HT | 3/16" |
| Piston Style | Flat Top, two valve reliefs |
AutoTec, 318 Poly, Flat Top, two valve reliefs, 3.940 Bore 4.000 Stroke 1.457 Comp HT
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