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Speedmaster Chevy BBC 454 496 C.I. Rotating Assembly Only; 2-Piece
Item U58503-EK
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$1,835.00
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Product Information
Description, Q&A, Specs & Installation
Description
SpecsBrand: SpeedmasterPart Number: PCE290.1119Part Type: Engine Rotating KitActual Engine CID: 496Bore (in): 4.310 in.Engine Stroke (in): 4.250 in.Balanced: NoPistons Included: YesPiston Rings Included: NoPiston and Ring Oversize (in): 0.060 in.Piston Material: Forged aluminumPiston Style: Dome top, with single valve reliefPiston Head Volume (cc): -20.00ccWrist Pin Style: Press-fit or floatingPiston Ring Facing Material: Plasma-molyCrankshaft Included: YesCrankshaft Material: Forged 4340 SteelRear Main Seal Style: 2-pieceEngine Balance: InternalConnecting Rods Included: YesConnecting Rod Material: 4340 Chromoly SteelConnecting Rod Beam Style: H-beam Street/StripConnecting Rod Length Center to Center (in): 6.385 in.Rod Bearings Included: NoMain Bearings Included: NoCam Bearings Included: NoGaskets Included: NoOil Pump Included: NoCamshaft Included: NoLifters Included: NoTiming Chain and Gears Included: NoPlastigage Included: NoAssembly Lubricant Included: NoQuantity: Sold as a kit.DescriptionCrankshaftSpeedmaster 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 doweled 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.
Speedmaster PCE290.1119
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Tech Specs
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