Chevy LS1 3.905" 393ci Forged Rotating Assembly Kit (F,H,F) [10/10 Crank]

Brand:	Speedmaster
Part Number:	PCE290.1157
Part Type:	Engine Rotating Kit
Actual Engine CID:	393
Bore (in):	3.905 in.
Engine Stroke (in):	4.100 in.
Balanced:	No
Pistons Included:	Yes
Piston Rings Included:	No
Piston and Ring Oversize (in):	STD
Piston Material:	Forged
Piston Style:	Flat top, with two valve reliefs
Piston Head Volume (cc):	-4.00cc
Wrist Pin Style:	Press-fit or floating
Piston Ring Facing Material:	N/A
Crankshaft Included:	Yes
Crankshaft Material:	Forged
Rear Main Seal Style:	1-piece
Engine Balance:	Internal
Connecting Rods Included:	Yes
Connecting Rod Material:	4340 Chromoly Steel
Connecting Rod Beam Style:	H-beam Street/Strip
Connecting Rod Length Center to Center (in):	6.125 in.
Rod Bearings Included:	No
Rod Bearing Undersize (in):	Stock
Main Bearings Included:	No
Cam Bearings Included:	No
Gaskets Included:	No
Quantity:	Sold as a kit.
Notes:	Crankshaft USA Machined to 10/10 to ensure no run out.

CrankshaftSpeedmaster forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower. Speedmaster crankshafts are precision-ground, heat-treated, shot-peened, inspected and micro-polished for superior tolerance control. Speedmaster crankshafts are also nitride-hardened for superior wear resistance, have straight-shot and chamfered oil holes, and feature lightening holes in all rod throws. These crankshafts also have a large radius on all journals for improved strength and wear resistance.Connecting RodsSpeedmaster H-beam connecting rods are one of the strongest connecting rods available. Speedmaster H-beam connecting rods are perfect for supercharged and nitrous applications. These rods incorporate a special dowelled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications.Speedmaster H Beam Street / Strip connecting rods are manufactured from aircraft quality 4340 chromoly steel. The rods are x-rayed and ultrasonically tested with all surfaces shot peened and stress relieved.PistonsSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.