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Premium Small Block Chevy Rotating Assembly - One Piece Main

Price: $219.99 - $794.99
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New one piece rear main cast steel crank. Standard size journals. Keith Black Hyperuetectic piston set and Speedway 4340 full floating H-beam rods. ARP bolts.

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.

Kits include:

  • Scat Cast Steel Crankshaft
    • One-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" or 6.0" lengths 
    • 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
  • King HP Series Main & 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 4340 H-Beam Rods
    • 5.7" length: 622 grams
    • 6.0" length: 634 grams
    • Reviews for Item #: 9151020
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    Questions and Answers for Item #: 9151020

    Get your questions answered by the community. Ask or answer questions below.

    3 Questions | 3 Answers
    Displaying Questions 1-3 of 3
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    Q:

    what is the horse power rating for the h beam rods compaired to the i beam style

    Asked on 4/21/2011 2:20:57 PM by cbr 929 from Iraq

    Answers (1) Know the answer? Answer this question

    Q:

    Are the pistons included in this assembly available with a stock bore?

    Asked on 6/16/2011 9:17:06 AM by Desert Dude from Iraq

    Answers (1) Know the answer? Answer this question

    Q:

    Do rist pins and retaining coils come with this rotating assembly part # 915-1020?

    Asked on 7/31/2011 12:33:19 PM by chad from mandeville LA

    Answers (1) Know the answer? Answer this question
    Displaying Questions 1-3 of 3

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    350 Flat Top - 5.7" Rod
    Price:
    $704.99
    KT
    Item #:
    9151020
    Item Details:
    Flat top, 680 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-10526 -Scat 350 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91510526
    Item Details:
    3.48" stroke
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 5.7
    1
      Show Specifications
    • 91015328-5.7
      Center to Center
      5.700"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Weight
      622
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs
    KB Chevy 350 Pistons - Flat Top
    Item #:
    474120
    Item Details:
    C/R 58cc=10.9, 64cc=10.2, 76cc=8.9
    Piston/Pin Weight: 680 g
    Rod Length: 5.7", Ring Style: A
    1986-96 S/B Chevy Balancing Plate for 1-PC Rear Main Seal Design
    Item #:
    91615375-86
    1
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    350 .200" Solid Dome - 5.7" Rod
    Price:
    $764.99
    KT
    Item #:
    9151025
    Item Details:
    0.200" solid dome, 720 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-10526 -Scat 350 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91510526
    Item Details:
    3.48" stroke
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 5.7
    1
      Show Specifications
    • 91015328-5.7
      Center to Center
      5.700"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Weight
      622
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs
    KB Chevy 350 Pistons - .200 Dome
    Item #:
    474180
    Item Details:
    C/R 58cc=13.1, 64cc=11.9, 76cc=10.3
    Piston/Pin Weight: 550 g
    Rod Length: 5.7", Ring Style: C
    1986-96 S/B Chevy Balancing Plate for 1-PC Rear Main Seal Design
    Item #:
    91615375-86
    1
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    350 Flat Top - 6" Rod
    Price:
    $764.99
    KT
    Item #:
    9151023
    Item Details:
    Flat top, 605 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-10526 -Scat 350 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91510526
    Item Details:
    3.48" stroke
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 6.0
    1
      Show Specifications
    • 91015328-6.0
      Center to Center
      6.000"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Rod Crank End Width
      0.940"
      Weight
      638
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs.
    KB Chevy 350 Pistons - Flat Top
    Item #:
    474112
    Item Details:
    C/R 58cc=10.9, 64cc=10.2, 76cc=8.9
    Piston/Pin Weight: 605 g
    Rod Length: 6.0", Ring Style: C
    1986-96 S/B Chevy Balancing Plate for 1-PC Rear Main Seal Design
    Item #:
    91615375-86
    1
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    350 .150" Dome - 6" Rod
    Price:
    $784.99
    KT
    Item #:
    9151027
    Item Details:
    0.150" dome, 630 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-10526 -Scat 350 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91510526
    Item Details:
    3.48" stroke
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 6.0
    1
      Show Specifications
    • 91015328-6.0
      Center to Center
      6.000"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Rod Crank End Width
      0.940"
      Weight
      638
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs.
    KB Chevy 350 Pistons - .150 Dome
    Item #:
    474113
    Item Details:
    C/R 58cc=12.5, 64cc=11.5, 76cc=10.0
    Piston/Pin Weight: 485 g
    Rod Length: 6.0", Ring Style: C
    1986-96 S/B Chevy Balancing Plate for 1-PC Rear Main Seal Design
    Item #:
    91615375-86
    1
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    383 Flat Top - 5.7" Rod
    Price:
    $744.99
    KT
    Item #:
    9151021
    Item Details:
    Flat top, 650 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-350-3750-5700-L - Scat 383 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91513755
    Item Details:
    3.75" stroke, 5.7" rod
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 5.7
    1
      Show Specifications
    • 91015328-5.7
      Center to Center
      5.700"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Weight
      622
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs
    KB Chevy 383 Pistons - Flat Top
    Item #:
    474134
    Item Details:
    C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
    Piston/Pin Weight: 650 g
    Rod Length: 5.7", Ring Style: A
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    383 .100" Dome - 5.7" Rod
    Price:
    $774.99
    KT
    Item #:
    9151024
    Item Details:
    0.100" dome, 680 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-350-3750-5700-L - Scat 383 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91513755
    Item Details:
    3.75" stroke, 5.7" rod
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 5.7
    1
      Show Specifications
    • 91015328-5.7
      Center to Center
      5.700"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Weight
      622
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs
    KB Chevy 383 Pistons - .100 Dome
    Item #:
    474111
    Item Details:
    C/R 58cc=13.8, 64cc=12.6, 76cc=10.9
    Piston/Pin Weight: 535 g
    Rod Length: 5.7", Ring Style: C
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    383 Flat Top - 6" Rod
    Price:
    $774.99
    KT
    Item #:
    9151026
    Item Details:
    Flat top, 570 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-350-3750-6000-L - Scat 383 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91513756
    Item Details:
    3.75" stoke - 6.0" rods
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 6.0
    1
      Show Specifications
    • 91015328-6.0
      Center to Center
      6.000"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Rod Crank End Width
      0.940"
      Weight
      638
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs.
    KB Chevy 383 Pistons - Flat Top
    Item #:
    474122
    Item Details:
    C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
    Piston/Pin Weight: 570 g
    Rod Length: 6.0", Ring Style: C
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    383 .150" Dome - 6" Rod
    Price:
    $794.99
    KT
    Item #:
    9151028
    Item Details:
    0.150" dome, 595 g
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    9-350-3750-6000-L - Scat 383 Chevy Cast Crankshaft, 1-Piece Main
    Item #:
    91513756
    Item Details:
    3.75" stoke - 6.0" rods
    1
    Small Block Chevy 4340 Steel H-Beam Rods, Bushed Pin
    Item #:
    91015328
    Length: 6.0
    1
      Show Specifications
    • 91015328-6.0
      Center to Center
      6.000"
      Crank Pin Diameter
      2.100"
      Wrist Pin Diameter
      0.930"
      Rod Crank End Width
      0.940"
      Weight
      638
      Material Type
      Steel
      Sold in Quantity
      Set
      Notes
      Torque rod bolts to 63 ft./lbs.
    KB Chevy 383 Pistons - .150 Dome
    Item #:
    474123
    Item Details:
    C/R 58=13.4, 64cc=12.3, 76cc=10.7
    Piston/Pin Weight: 450 g
    Rod Length: 6.0", Ring Style: C
    Rod Bearings
    Item #:
    910807HP
    Item Details:
    S/B Chevy Large Journal 350/400 - 2.100" Rods
    Size: Std
    1
    Main Bearings
    Item #:
    910557HP
    Item Details:
    S/B Chevy Large Journal 350 - 2.100" Rods
    Size: Std
    1
     
    (0 Rating)
    Machining Labor - 350/383 with 6" Rod
    Price:
    $219.99
    KT
    On Order
    Back In Stock Notification
    Item #:
    91510202
    Item Details:
    350/383 with 6.0 rods
    Kit includes a 153 tooth flexplate and 8" 350 stock-style damper.
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    Labor-Balance Rotating Assy
    Item #:
    91600016
    1
    Side Clearance 8 Rods
    Item #:
    91600017
    1
    SBC 350 Harmonic Balancer - 8" Diameter - Steel
    Item #:
    91015357
    1
      Show Specifications
    • 91015357
      Sold in Quantity
      Each
      Notes
      This is tested up to 7500 RPM
    S/B Chevy 153 Tooth Flexplate, 1-Piece Rear Main
    Item #:
    91048362
    Item Details:
    External Balance, 1985-1989 V8
    1
      Show Specifications
    • 91048362
      Outside Diameter
      12.880"
      Tooth Count
      153
      Torque Converter Bolt Circle
      10.750
      Hole Diameter
      2.050"
      Material Type
      Steel
      Finish
      Natural
      Sold in Quantity
      Each
     
    (1 Rating)
    Machining Labor - 383 with 5.7" Rod
    Price:
    $219.99
    KT
    In Stock
    Item #:
    91510204
    Item Details:
    383 with 5.7 rods
    Kit includes a 153 tooth flexplate and 8" 400 stock-style damper.
    Open Kit Components
    - Selection of individual components may be necessary for kit purchase.
    Kit Components
    Labor-Balance Rotating Assy
    Item #:
    91600016
    1
    Side Clearance 8 Rods
    Item #:
    91600017
    1
    S/B Chevy 153 Tooth Flexplate, 1-Piece Rear Main
    Item #:
    91048362
    Item Details:
    External Balance, 1985-1989 V8
    1
      Show Specifications
    • 91048362
      Outside Diameter
      12.880"
      Tooth Count
      153
      Torque Converter Bolt Circle
      10.750
      Hole Diameter
      2.050"
      Material Type
      Steel
      Finish
      Natural
      Sold in Quantity
      Each
    SBC 400 Harmonic Balancer - 8" Diameter - Steel
    Item #:
    91015400
    1
      Show Specifications
     
    (0 Rating)
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