| Engine Family | LS7 12° |
|---|---|
| CID/Ltr | 427/7.0 |
| Bore Inch | 4.125 |
| Bore mm | 104.78 |
| Stroke Inch | 4 |
| Stoke mm | 101.6 |
| Rod Length | 6.077 |
| Comp Dist | 1.163 |
| Crown Volume | -20.7cc |
| CR 1 | 10.4 @ 64cc |
| CR 2 | 10.0 @ 66cc |
| CR 3 | 9.5 @ 70cc |
| Alloy | 4032 |
| Weight | 444 |
| Pin | 0.927 |
| Oil Rails Included | Yes |
| Top Ring | 1.5mm |
| 2nd Ring | 1.5mm |
| Oil Ring HT | 3.0mm |
| Piston Style | Dish |
AutoTec, LS7 12°, Dish, 4.125 Bore 4.000 Stroke 1.163 Comp HT
CALL TO ORDER 714-903-4362
Please fill in the details below to calculate the compression ratio for your engine. Accurate inputs will give the best results. Once you’ve filled out the form, click “Calculate” to see your engine's compression ratio.
You’ll be first to learn about RaceTec Pistons discounts and special events!
