Details
The 3.900 stroke fits the stock LS blocks better because the piston does Not come out of the bottom of the bore as much as the 4.000 stroke. This makes the piston more stable in the bore and does Not have rings trying to come out of the bottom of the bore. This kit is designed for OEM Stock Blocks
K1 LS1/LS2/LS6 & LS3/L92 Rotating Assemblies feature Precision Balanced K1 4340 forged 3.900 stroke cranks, K1 Forged 4340 H-beam rods with 7/16 ARP2000 bolts, Wiseco forged pistons for 9.5-10.7:1 with 68cc chambers.This assembly is compatible with LS1/LS2/LS6 & LS3/L92 style cylinder heads.
- 4.005 x 3.900 bore & stroke
- 397 cid
- K1 3.900 stroke 4340 forged crankshafts
- K1 4340 forged H-beam rods, 6.125 length
- 1000 HP with ARP2000 rod bolts
- Wiseco Race series 2618 forged pistons -9cc, -5cc or -17cc dish pistons
- 9.5-10.7:1 w/68cc LS1/LS2/LS6 - 9.2 - 10.2:1 w/70cc LS3/L92
- Premium 2618 material for added strength & reliability
- .200 wall 9310 steel pins
- Nitrided steel top & napier 2nd rings 1.2x1.2x3mm
- King HP Alecular rod & main bearings
- Precision Balanced
- Also Available in the following bores:
- 3.780, 3.800, 4.005, 4.010, 4.020, 4.030, 4.035, 4.065, 4.070, 4.075, 4.080, 4.085, 4.125, 4.130, 4.135, 4.155, 4.165 & 4.185
- 24 or 58 tooth reluctor installed
Other bore & stroke combinations and compression ratios available.
Additional Information
| Manufacturer | K1 |
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