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Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods

Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods

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Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
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Part # 91510295.GS
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This is garage sale priced because it has been balanced by our engine shop.

No Warranty, No Returns on Garage Sale Items    


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! 

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

.150" dome


C/R 58cc=14.1, 64cc=13.0, 76cc=11.2
Piston/Pin Weight: 645 g
Rod Length: 6.0", Ring Style: C     


  • 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
    • 6" lengths
    • 634 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 & 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

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
    Qty x 1
  • 1955-85 Small Block Chevy Balancing Plate
    Qty x 1
  • Scat 940050 400 Chevy Cast Steel Crankshaft
    Qty x 1
  • Small Block Chevy 6.0 H-Beam Connecting Rods, 4340 Steel, 7/16
    Qty x 1
  • KB Chevy 400 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    Qty x 1
  • King HP Series Chevy 350/400 Large Journal Engine Rod Bearings, S
    Qty x 1
  • King HP Series Chevy 400 Large Journal Engine Main Bearings, Stan
    Qty x 1

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