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$875.99
$869.99
Premium Chevy 383 Rotating Assembly, 1-Piece Main, Flat Top, 5.7 Rod
Premium Chevy 383 Rotating Assembly, 1-Piece Main, Flat Top, 5.7 Rod
350 Chevy Small Block V8, 383 Chevy Small Block V8, 350 mains Main Journal Style
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Premium Chevy 383 Rotating Assembly, 1-Piece Main, Flat Top, 5.7 Rod
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Part # 9151021
$869.99
$875.99
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- Fits 350/383 Chevy Small Block V8
- Includes cast steel crank, Keith Black Hypereutectic pistons, and Speedway 4340 full floating H-beam rods with ARP bolts
- One-piece rear main seal
- Hypereutectic aluminum piston material
- Forged 4340 steel connecting rod
Build Your Kit
You're almost there! This kit has an option or two for you to select. Let us know which options you want for your new kit.Item 1 of 1
KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
Quantity: 1
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Details
Main Journal Style:
350 mains
Engine Stroke:
3.750"
Connecting Rod Type:
H-Beam
Connecting Rod Length:
5.700"
Connecting Rod Material:
Forged 4340 Steel
Connecting Rod Weight:
622 grams
Connecting Rod Bolt Diameter:
7/16"
Piston Style:
Flat Top
Piston Material:
Hypereutectic Aluminum
Piston Weight:
505 grams
Piston Ring Style:
A
Crankshaft Material:
Cast Steel
Rear Main Seal Style:
1-piece
Wrist Pin Diameter:
.9272"
Wrist Pin Weight:
145 grams
Main Journal Diameter:
2.448"
Rod Journal Diameter:
2.10"
Bearing Construction:
Bi-metal
Bearing Undersize:
Standard
Narrowed Bearing:
Yes
Coated Bearing:
No
MFG. Part #:
9151021
Sold in Quantity:
Kit
Info
These rotating assembly engine rebuild kits feature a new one piece rear main cast steel crank with standard size journals, Keith Black Hyperuetectic piston set, and Speedway 4340 full floating H-beam rods with 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.
Item Details
Flat top, 650 g
C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
Piston/Pin Weight: 650 g
Rod Length: 5.7", Ring Style: A
Notes
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" (622 grams) or 6.0" (634 grams) 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
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
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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.
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Scat 935050L 383 Chevy Cast Steel Crankshaft, 1-Piece Main, 5.7 RodPart # 91513755Qty x 1
-
Small Block Chevy 5.7 H-Beam Connecting Rods, 4340 Steel, 7/16Part # 91015328-5.7Qty x 1
-
KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 RodPart # 474134Qty x 1
-
King HP Series Chevy 350/400 Large Journal Engine Rod Bearings, StdPart # 910807HP-STDQty x 1
-
King MB 557HP HP Series Chevy 350 Large Journal Main BearingsPart # 910557HP-STDQty x 1
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Reviews
Q & A
Videos & Articles
-
Learn about the importance of getting the chain tension set correctly, and why it is critical that we get it as near perfect as we can. Walkthrough a basic procedure that effectively and consistently gets the chain tension set properly every time.
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Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century.