Street Small Block Chevy 377 Rotating Assembly, Dish Dome, 6 Inch Rod
377 Chevy Small Block V8, 400 Chevy Small Block V8, 400 mains Main Journal Style
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These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size. Includes spacers for main bearings.
Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.
These assemblies will require balancing either by us or your machine shop.
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.
Item DetailsIncludes spacers for main bearings
- Speedway Cast Steel Crankshaft
- Two-piece rear main
- 80-60-06 cast steel
- Speedway 5140 I-Beam Connecting Rods
- Heat treated, shot peened and magnafluxed
- 6.0" length
- Set of 8 rods
- Bushed pin
- 597 grams
- KB Hypereutectic Dished Pistons
- T-5 heat treated aluminum construction
- 4.000" bore pistons available in .030, .040, or .060 sizes
- 4.125" bore pistons available in .030 or .040 sizes
What's In The Kit
Small Block Chevy 5140 Steel I-Beam Rods, 6.0 Inch, Bushed PinPart # 91015398Qty x 1
KB Chevy 377 Hypereutectic Pistons, Dish, 6.0 Inch RodPart # 474350Qty x 1
Speedway Chevy 350 Crankshaft, Two-Piece MainPart # 91515350Qty x 1
King MB5224AM Main Bearing Spacers - Small Block Chevy, 350 CrankPart # 5051120Qty x 1
King HP Series Chevy 350/400 Large Journal Engine Rod Bearings, StdPart # 910807HP-STDQty x 1
King HP Series Chevy 400 Large Journal Engine Main Bearings, StandardPart # 910509HP-STDQty x 1
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Q & A
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