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Scat 1-40577

Chevy Small Block 4340 Forged Superlight Competition Rotating Assembly 408ci

Scat 1-40577
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Product images may differ from actual product appearance.

942-1-40577

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Ships 12/21/16 if Ordered Today
Scat 1-40577 Chevy Small Block 4340 Forged Superlight Competition Rotating Assembly 408ci $2,751.00
Chevy Small Block 4340 Forged Superlight Competition Rotating Assembly
  • 408ci
  • 4.030'' Bore
  • 14.6:1 Dome Piston w/64cc Combustion Chamber
  • 4.000'' Crank Stroke
  • 6.000'' Rod Length
  • Unbalanced Assembly

  • Scat 1-40577 Details

    350 Main Journals

  • 408 Cubic Inch
  • 4.000'' Crank Stroke
  • 2-Piece Rear Seal

    NOTE: This assembly is unbalanced.

    Assembly Includes:
  • 4340 Forged Superlight Cranks
  • Stroker Ultra-Lite H-Beam Connecting Rods with 7/16'' Cap Screws
  • SRP Professional Pistons & Rings
  • Rod Bearings
  • Main Bearings

  • Specifications:

    Engine Balance
    Internal
    Rear Main Seal Style
    2-Piece
    Gaskets Included
    No
    Actual Engine CID
    408
    Assembly Lubricant Included
    No
    Balanced
    No
    Bore (in.)
    4.03
    Bore (mm)
    102.362
    Cam Bearings Included
    No
    Camshaft Included
    No
    Connecting Rod Beam Style
    H-beam
    Connecting Rod Material
    Forged 4340 steel
    Connecting Rods Included
    Yes
    Crankshaft Included
    Yes
    Crankshaft Material
    Forged 4340 steel
    Engine Stroke (in.)
    4
    Lifters Included
    No
    Main Bearing Undersize (in.)
    Stock
    Main Bearing Undersize (mm)
    Stock
    Main Bearings Included
    Yes
    Oil Pump Included
    No
    Piston and Ring Oversize (in.)
    0.03
    Piston Head Volume (cc)
    -11
    Piston Material
    Forged aluminum
    Piston Ring Facing Material
    Plasmamoly
    Piston Rings Included
    Yes
    Piston Style
    Dome, with two valve reliefs
    Pistons Included
    Yes
    Plastigage Included
    No
    Quantity
    Sold as a kit
    Rod Bearing Undersize (in.)
    Stock
    Rod Bearing Undersize (mm)
    Stock
    Rod Bearings Included
    Yes
    Timing Chain and Gears Included
    No
    Wrist Pin Style
    Floating
    Manufacturer's Part Number:
    1-40577

    Super Light Design and Competition Proven!

    Rotating Assembly with SRP Professional Series Pistons
    Scat rotating assembly component parts are designed for the ultimate in performance. They take the ''guess work'' out of engine assemblies, just wash, Q.C. and assemble. The heart of this assembly is the Superlight design crankshaft. This race crank starts by being precision ground and nitrided hardened for superior wear resistance. Key features of the Superlight crankshaft are the aero wing counterweights, pendulum undercut counter weights, rod journals are bridge for increased strength and lightening holes in all rod journals, large radius on all journals, straight shot and chamfered oil holes make this crankshaft super light and the racers top choice!







    This Assembly features Scat Q-Lite H-Beam or Ultra Q-Lite Stroker H-Beam 4340 forged connecting rods. They are a bushed pin design. They are shipped 100% ready to install with ARP cap screws and feature special doweled cap and profiled clearance. The Formula ''1'' style lightening hole which reduces big-end weight, but does not compromise strength.





    The pistons are SRP Professional Series which are an advanced, lightweight FSR forging that eliminates stress concentrations for superior strength, Up to 20% lighter than traditional equivalent, High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation, Accumulator grooves for improved ring seal, Designed for normally aspirated or moderate forced induction/nitrous applications, and now includes high performance skirt coating! Lightweight, low friction metric piston ring package is included. It features 1.2mm top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring. The Napier 2nd ring was chosen for improved oil control. Minimal filing required. High quality 2.250'' piston pins further reduces reciprocating weight. Carbon steel wire locks included.





    Rod and main bearings are included with each rotating assembly. The bearings are chosen by Scat from the most respected names in the business such as Clevite, King, and Federal Mogul, that best works with each premium crankshaft and rotating assembly.





    Scat has been manufacturing and distributing crankshafts, connecting rods and engine components for the automotive aftermarket since the early 1960's. This tradition continues to this day with their 42,000 square foot manufacturing facility in Redondo Beach, California, USA! All Scat engine components are made with quality at the forefront, starting with only the best materials. All of their highly trained and skilled craftsman use Scat's innovation, creativity and dedication to produce you the absolute best parts possible.

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