Premium SB Chevy Rotating Assembly, 383 .100 Dome, 5.7 In Rods
Premium SB Chevy Rotating Assembly, 383 .100 Dome, 5.7 In Rods
Speedway Motors

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#91510255

Premium SB Chevy Rotating Assembly, 383 .100 Dome, 5.7 In Rods

$1,643.99

/kit

On Backorder

$1,668.74

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Product Summary

350 mains Main Journal Style, 3.750" Engine Stroke

    Comes as a Kit

    View Kit Components

    See more details

    Key Specs

    MFG. Part #91510255
    BrandSpeedway Motors
    Connecting Rod TypeH-Beam
    Piston StyleDome
    Piston MaterialHypereutectic Aluminum
    See more specs

    Need To Know

    Need help?

    855.313.9176
    View the Help Center

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    Speedway Motors 91510255 Details

    Speedway introduces premium rotating assembly engine rebuild kits, with an optional balance job. Includes new 2-pc rear main seal cast steel crank, rods, pistons rod & main bearings. Cranks are new so they use standard size bearings.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience! A kit purchased with the optional balance job will ship in 24-48 hours.

    NOTE: Piston rings are not included and must be purchased separately.

    Item Details

    .100" dome, 680 g

    C/R 58cc=13.8, 64cc=12.6, 76cc=10.9
    Piston/Pin Weight: 535 g
    Rod Length: 5.7", Ring Style: C     

    Kits include:

    • Speedway Cast Steel Crankshaft
      • Two-piece rear main
      • 80-60-06 cast steel construction
      • Fatigue-resistant with near forged steel endurance
      • Standard size journals
    • Speedway 4340 H-beam Connecting Rods w/ ARP bolts
      • Full floating pin in silicon bronze bushing
      • Precision bolt bushings to positively locate cap
      • 5.7 " lengths
      • 622 grams
      • Weight matched set of 8 rods
    • Keith Black Signature Series Hypereutectic Pistons
      • T-5 heat treated aluminum construction
      • Super stiff design for maximum ring seal
      • 4.000 " bore pistons available in .030, .040, or .060 sizes
      • 4.125 " bore pistons available in .030 or .040 sizes
    • King HP Series Main and Rod Bearings
      • 0.015 " thick top layer for superior macro particle embedability and conformability
      • 40 Vickers hardness to resist overlay migration and extrusion
      • 450°F heat threshold for superior protection against friction and overheating
      • Mains are 3/4 grooved for improved oiling to the rod journals
      • Bi-metal aluminum silicon alloy featuring fine micro-bore finish

    Kits include:

    • Speedway Cast Steel Crankshaft
      • Two-piece rear main
      • 80-60-06 cast steel construction
      • Fatigue-resistant with near forged steel endurance
      • Standard size journals
    • Speedway 4340 H-beam Connecting Rods w/ ARP bolts
      • Full floating pin in silicon bronze bushing
      • Precision bolt bushings to positively locate cap
      • 5.7 " lengths
      • 622 grams
      • Weight matched set of 8 rods
    • Keith Black Signature Series Hypereutectic Pistons
      • T-5 heat treated aluminum construction
      • Super stiff design for maximum ring seal
      • 4.000 " bore pistons available in .030, .040, or .060 sizes
      • 4.125 " bore pistons available in .030 or .040 sizes
    • King HP Series Main and Rod Bearings
      • 0.015 " thick top layer for superior macro particle embedability and conformability
      • 40 Vickers hardness to resist overlay migration and extrusion
      • 450°F heat threshold for superior protection against friction and overheating
      • Mains are 3/4 grooved for improved oiling to the rod journals
      • Bi-metal aluminum silicon alloy featuring fine micro-bore finish

    Speedway Motors 91510255 Specifications

    KEY SPECS
    MFG. Part #91510255
    BrandSpeedway Motors
    Connecting Rod TypeH-Beam
    Piston StyleDome
    Piston MaterialHypereutectic Aluminum
    GENERAL
    Main Journal Style350 mains
    Engine Stroke3.750"
    Connecting Rod Length5.700"
    Connecting Rod MaterialForged 4340 Steel
    Connecting Rod Weight622 grams
    Connecting Rod Bolt Diameter7/16"
    Dome Height0.100"
    Piston Weight535 grams
    Piston Ring StyleC
    Crankshaft MaterialCast Steel
    Rear Main Seal Style2-piece
    Wrist Pin Diameter.9272"
    Wrist Pin Weight145 grams
    Main Journal Diameter2.448"
    Rod Journal Diameter2.10"
    Bearing ConstructionBi-metal
    Bearing UndersizeStandard
    Narrowed BearingYes
    Coated BearingNo
    Sold in QuantityKit

    Questions & Answers

    1 Question • 1 Answer

    Is 383 crank internally or externally balanced

    by Jc

    • 8 years ago

    1 answer

    View Answer

    1 of 1 questions shown

    Fitment

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