Premium SB Chevy Rotating Assembly, 377 Flat Top, 5.7 In Rods

#91510236

Premium SB Chevy Rotating Assembly, 377 Flat Top, 5.7 In Rods

Name: Premium SB Chevy Rotating Assembly, 377 Flat Top, 5.7 In Rods
Brand: Speedway Motors
SKU: 91510236
Price: 1373.99 USD
Availability: BackOrder

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3 Questions

$1,373.99

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On Backorder

This part is Backordered. We estimate this item will ship on or before January 31st.

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Product Summary

350 mains Main Journal Style, Flat Top Piston Style

Comes as a Kit

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Key Specs

MFG. Part #	91510236
Brand	Speedway Motors
Connecting Rod Type	H-Beam
Piston Style	Flat Top
Piston Material	Hypereutectic Aluminum

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Speedway Motors 91510236 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.

NOTE: 377 Kit includes main bearing spacers

Item Details

Flat top, 725 g

(377) C/R 58cc=11.5, 64cc=10.7, 76cc=9.4
(400) C/R 58cc=12.3, 64cc=11.4, 76cc=10.1
Piston/Pin Weight: 580 g
Rod Length: 5.7(377), 5.565(400)
Ring Style: A

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

Guides & Documents

Pistons Installation Instructions (474172)

Pistons Technical Information (474172)

Speedway Motors 91510236 Specifications

KEY SPECS
MFG. Part #	91510236
Brand	Speedway Motors
Connecting Rod Type	H-Beam
Piston Style	Flat Top
Piston Material	Hypereutectic Aluminum

GENERAL
Main Journal Style	350 mains
Connecting Rod Length	5.700"
Connecting Rod Material	Forged 4340 Steel
Connecting Rod Weight	622 grams
Connecting Rod Bolt Diameter	7/16"
Piston Weight	580 grams
Piston Ring Style	A
Crankshaft Material	Cast Steel
Rear Main Seal Style	2-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
Sold in Quantity	Kit

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Questions & Answers

3 Questions • 3 Answers

Sort Questions

What stroke is the crank? And can I get a 4.0 inch pistons?

by Jason

• 8 years ago

1 answer

View Answer

What would the cr be with a 64cc head with this kit?

by Eric

• 9 years ago

1 answer

View Answer

Do you offer a similar kit with a 4.125 piston and a 6.0 bushed rod?

by Auto

• 10 years ago

1 answer

View Answer

3 of 3 questions shown

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