Diamond R Series LS Race Series Forged Pistons
Type: Pistons
Vendor: Diamond Pistons
Description:
New Release - Diamond's new R Series Race Pistons INCLUDE upgraded 8620 .185W wrist pins (a $208 upgrade on the Street/Strip R Series Pistons) and are machined using their newest and most precise equipment. This price includes Diamond rings. All of these pistons take a 6.125" rod and are designed for LS1, LS2/6, and LS3 cylinder heads (15 degree valve angle). Please give us a call if you have any questions.
| Bore | Stroke | C.D. | Weight | CC's | 62cc | 66CC | 70CC | Part |
| 3.905 | 4.000 | 1.115 | 391 | -2.0 | 11.7 | 11.1 | 10.7 | 11570-R1 |
| 3.905 | 4.000 | 1.115 | 367 | -28.0 | 8.9 | 8.6 | 8.3 | 11574-R1 |
| 4.000 | 4.000 | 1.115 | 419 | -2.0 | 12.2 | 11.6 | 11.0 | 11571-R1 |
| 4.000 | 4.000 | 1.115 | 396 | -28.0 | 9.3 | 8.9 | 8.7 | 11575-R1 |
| 4.030 | 4.000 | 1.115 | 429 | -2.0 | 12.3 | 11.8 | 11.2 | 11572-R1 |
| 4.030 | 4.000 | 1.115 | 405 | -28.0 | 9.4 | 9.1 | 8.8 | 11576-R1 |
| 4.065 | 4.000 | 1.115 | 415 | -28.0 | 9.5 | 9.2 | 8.9 | 11578-R1 |
| 4.070 | 4.000 | 1.115 | 418 | -28.0 | 9.6 | 9.2 | 8.9 | 11579-R1 |
| 4.070 | 4.125 | 1.050 | 427 | -2.0 | 12.8 | 12.2 | 11.7 | 11558-R1 |
| 4.070 | 4.125 | 1.050 | call | -28.0 | 9.8 | 9.4 | 9.1 | 11582-R1 |
| 4.125 | 4.000 | 1.115 | 456 | -2.0 | 12.9 | 12.3 | 11.7 | 11573-R1 |
| 4.125 | 4.000 | 1.115 | 434 | -28.0 | 9.8 | 9.5 | 9.1 | 11577-R1 |
| 4.125 | 4.125 | 1.050 | 444 | -2.0 | 13.1 | 12.5 | 12.0 | 11559-R1 |
| 4.125 | 4.125 | 1.050 | call | -28.0 | 10.0 | 9.7 | 9.3 | 11583-R1 |
- 3D milling on piston crowns for ready to install finish
- Inboard forging design for maximum strength
- Valve pockets designed to work with most aftermarket cylinder heads
- Offset pins for quiet operation
- Moly skirt coating for friction loss and skirt wear protection
- Top ring down dimension: .250"
- Ratios figured for .040 head gasket
- Premium 1.2mm x 1.2mm x 3.0mm ring package included
- Premium 1.2mm x 1.5mm x 3.0mm ring package on all 3.905 bore piston sets included
- Premium 8620 .185W wrist pins included
- Valve pocket depth: 0.176" intake and .105" exhaust
- 2618 material for High HP-NOS-Boost applications
