Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 6 Inch Rods

#91510290

Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 6 Inch Rods

Name: Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 6 Inch Rods
Brand: Speedway Motors
SKU: 91510290
Price: 1732.99 USD
Availability: InStock
Rating: 5 (1 reviews)

1 Review

1 Question

For 400 small block Chevy V8's
Kit includes new 2-pc rear main seal cast steel crank, rods, pistons rod & main bearings
Cast steel crankshaft

$1,732.99

/kit

In Stock

$1,758.37

Save $25.38

Quantity

Need Help? Call to Order

Add to a list

Select an engine to verify Fitment

Select Engine

Product Summary

400 mains Main Journal Style, 3.750" Engine Stroke

For 400 small block Chevy V8's
Kit includes new 2-pc rear main seal cast steel crank, rods, pistons rod & main bearings
Cast steel crankshaft
Forged 4340 steel connecting rods
6" rod length

Comes as a Kit

View Kit Components

See more details

Key Specs

MFG. Part #	91510290
Brand	Speedway Motors
Connecting Rod Type	H-Beam
Piston Style	Flat Top
Piston Material	Hypereutectic Aluminum

See more specs

Need To Know

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

Speedway Motors 91510290 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.

Item Details

Flat top, 620 g

C/R 58cc=12.3, 64cc=11.64, 76cc=10.0
Piston/Pin Weight: 475 g
Rod Length: 6.0", Ring Style: C

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
- 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 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
- 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 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 (474128)

Pistons Technical Information (474128)

Speedway Motors 91510290 Specifications

KEY SPECS
MFG. Part #	91510290
Brand	Speedway Motors
Connecting Rod Type	H-Beam
Piston Style	Flat Top
Piston Material	Hypereutectic Aluminum

GENERAL
Main Journal Style	400 mains
Engine Stroke	3.750"
Connecting Rod Length	6.000"
Connecting Rod Material	Forged 4340 Steel
Connecting Rod Weight	638 grams
Connecting Rod Bolt Diameter	7/16"
Piston Weight	475 grams
Piston Ring Style	C
Crankshaft Material	Cast Steel
Rear Main Seal Style	2-piece
Wrist Pin Diameter	0.9272"
Wrist Pin Weight	145 grams
Main Journal Diameter	2.650"
Rod Journal Diameter	2.10"
Bearing Construction	Bi-metal
Bearing Undersize	Standard
Narrowed Bearing	Yes
Coated Bearing	No
Sold in Quantity	Kit

Ratings & Reviews

1 Review

Write A Review

1 reviews

Filter by Ratings

Sort Reviews

Great kit

5.0

8 months ago

Dave

Massillon, ohio

Verified

Comes with quality parts, no junk. Definitely recommend.

Would Recommend

Showing 1 of 1 reviews

Questions & Answers

1 Question • 1 Answer

Sort Questions

Is this kit internally balanced? What compression would I have with a 75cc cylinder head?

by Mike

• 10 years ago

1 answer

View Answer

1 of 1 questions shown

Fitment

1970-1975 Chevy Bel Air

2-Piece Rear Main Chevy 400

1970-1972 Chevy Biscayne

2-Piece Rear Main Chevy 400

1970-1972 Chevy Brookwood

2-Piece Rear Main Chevy 400

1976-1980 Chevy C10

2-Piece Rear Main Chevy 400

1976-1980 Chevy C20

2-Piece Rear Main Chevy 400

1976-1980 Chevy C20 Suburban

2-Piece Rear Main Chevy 400

1976-1979 Chevy C30

2-Piece Rear Main Chevy 400

1970-1976 Chevy Caprice

2-Piece Rear Main Chevy 400

1970-1973 Chevy Chevelle

2-Piece Rear Main Chevy 400

1970-1976 Chevy El Camino

2-Piece Rear Main Chevy 400

1970 Chevy Estate

2-Piece Rear Main Chevy 400

1976 Chevy G10

2-Piece Rear Main Chevy 400

1975-1980 Chevy G20

2-Piece Rear Main Chevy 400

1975-1980 Chevy G30

2-Piece Rear Main Chevy 400

1970-1976 Chevy Impala

2-Piece Rear Main Chevy 400

1975-1980 Chevy K10

2-Piece Rear Main Chevy 400

1975-1979 Chevy K10 Suburban

2-Piece Rear Main Chevy 400

1975-1980 Chevy K20

2-Piece Rear Main Chevy 400

1975-1980 Chevy K20 Suburban

2-Piece Rear Main Chevy 400

1977-1980 Chevy K30

2-Piece Rear Main Chevy 400

1975-1979 Chevy K5 Blazer

2-Piece Rear Main Chevy 400

1970-1972 Chevy Kingswood

2-Piece Rear Main Chevy 400

1973-1976 Chevy Laguna

2-Piece Rear Main Chevy 400

1973-1976 Chevy Malibu

2-Piece Rear Main Chevy 400

1970-1976 Chevy Monte Carlo

2-Piece Rear Main Chevy 400

1976 Chevy P30

2-Piece Rear Main Chevy 400

1970-1972 Chevy Townsman

2-Piece Rear Main Chevy 400

1973-1974 GMC C35/C3500 Pickup

2-Piece Rear Main Chevy 400

1975-1978 GMC K15

2-Piece Rear Main Chevy 400

1975-1978 GMC K15 Suburban

2-Piece Rear Main Chevy 400

1967-1974 GMC K15/K1500 Pickup

2-Piece Rear Main Chevy 400

1967-1974 GMC K15/K1500 Suburban

2-Piece Rear Main Chevy 400

1979-1980 GMC K1500 Suburban

2-Piece Rear Main Chevy 400

1975-1978 GMC K25

2-Piece Rear Main Chevy 400

1975-1978 GMC K25 Suburban

2-Piece Rear Main Chevy 400

1973-1974 GMC K25/K2500 Pickup

2-Piece Rear Main Chevy 400

1973-1974 GMC K25/K2500 Suburban

2-Piece Rear Main Chevy 400

1979-1986 GMC K2500 Suburban

2-Piece Rear Main Chevy 400

1973-1974 GMC K35/K3500 Pickup

2-Piece Rear Main Chevy 400

1973-1977 GMC Sprint

2-Piece Rear Main Chevy 400