Part# K1403LS-9BAbove Added: Thu March 3, 2016, 10:39 am ESTThis K1/Wiseco Rotating Assembly for 393cid / 6.45L to 407cid / 6.7L cid GM LS engines is Precision Balanced with 3.900 stroke K1 4340 Forged Crank, K1 H-beam rods with ARP2000 bolts and Wiseco 2618 forged pistons with Nitrided steel rings for 9.2 to 10.3 to 1 compression with 68cc combustion chambers.
Fits LS1/LS2/LS6 and LS3/L92engines.
(Also available with 3.799, 4.030, 4.040, 4.065, 4.070, 4.075, 4.080 bore for 354cid 5.8L - 393cid 6.45L)
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.
Includes:
K1 4340 Forged LS 3.900 stroke crankshaft with 24T or 58T reluctor wheel
Lightened rod journals reduce inertia weight
Counter weights shaped and profiled for reduced windage
K1 Forged H-beam Rod with ARP2000 bolts
Assemblies can handle 1,000+ HP
Wiseco 2618 Forged -9cc, -17cc and -20cc dish Piston
9.2-1 to 10.25 -1 Comp Ratio with 68cc chambers
2618 high strength material for greatest reliability
LS1,LS2,LS6, LS3, L92 cylinder head compatible
2.250 x .185 wall H13 tool steel pins
Nitrided Steel top & napier 2nd rings 1.2 x 1.2 x 3mm
King HP Alecular rod and main bearings
Precision BALANCED and Ready to Assemble
Also Available with other bores, cid and compression
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