Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods

#91510260

Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods

Name: Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods
Brand: Speedway Motors
SKU: 91510260
Price: 1645.99 USD
Availability: InStock
Rating: 4.5 (2 reviews)

2 Reviews

6 Questions

For 350 Chevy small block V8
6" connecting rod length
Durable cast steel crankshaft

$1,645.99

/kit

In Stock

$1,670.10

Save $24.11

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Product Summary

350 mains Main Journal Style, 3.750" Engine Stroke

For 350 Chevy small block V8
6" connecting rod length
Durable cast steel crankshaft
Two-piece rear main seal
Kit includes 2-pc rear main seal cast steel crank, rods, pistons rod & main bearings

Comes as a Kit

View Kit Components

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Key Specs

MFG. Part #	91510260
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

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Speedway Motors 91510260 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, 570 g

C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
Piston/Pin Weight: 570 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 (474122)

Pistons Technical Information (474122)

Speedway Motors 91510260 Specifications

KEY SPECS
MFG. Part #	91510260
Brand	Speedway Motors
Connecting Rod Type	H-Beam
Piston Style	Flat Top
Piston Material	Hypereutectic Aluminum

GENERAL
Main Journal Style	350 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	425 grams
Piston Ring Style	C
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

Ratings & Reviews

4.5

2 Reviews

Overall Assessment

Customers highly recommend this product for its superior quality and precision. They find it a worthwhile investment, stressing the precise measurements, particularly the pistons, that match perfectly with the engine blocks. Many appreciate that the pistons are conveniently labeled for individual cylinders. Despite its slightly higher price, compared to the economy package, they establish it as a better value due to its remarkable technical specs and support. The superior quality parts and precision offered by this product make it stand out in the market.

Write A Review

4.5

2 reviews

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Quality parts at a great price

4.0

5 years ago

Chuck Lackie

Dartmouth, MA

Verified

Parts are being turned over to machine shop for assembly!!

Would Recommend

reccomend over the economy package

5.0

9 years ago

Bodyman

Memphis Mi.

Verified

The extra couple of hundred over the economy package is well worth it. My block had been bored to .040 over and these pistons all measured exactly 4.037. PERFECT!! Had Speedway balance it too! Pistons all came in numbered for the cylinder they were to be installed in. Also GREAT TECH. support.

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

6 Questions • 6 Answers

Sort Questions

Are the rods and pistons balanced within 1 gram ?

by Bill

• 9 years ago

1 answer

View Answer

does my block need any work done for the crank or rods to clear?

by the last outlaw

• 9 years ago

1 answer

View Answer

I may have missed this being an old goat. Do y'all attach piston to rod and do an internal balance only on this kit?

by Mark

• 9 years ago

1 answer

View Answer

which balance service would this kit require ?

by Murray

• 10 years ago

1 answer

View Answer

Are the rods clearanced for the cam or do they need grinding which will change the balance of the rotating assembly?

by bullshoals23T

• 11 years ago

1 answer

View Answer

are the flat tops 2 vavle relief? what- cc?

by lilly

• 12 years ago

1 answer

View Answer

6 of 6 questions shown

Fitment

1973-1975 Chevy Bel Air

Gen 1 L48 Small Block Chevy

1972 Chevy Blazer

Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1973-1974 Chevy Blazer

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1973-1982 Chevy C10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1983 Chevy C10

2-Piece Rear Main Chevy 350

1984 Chevy C10

Gen 1 L48 Small Block Chevy

1985 Chevy C10

2-Piece Rear Main Chevy 350

1972-1982 Chevy C10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1983 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1984 Chevy C10 Suburban

Gen 1 L48 Small Block Chevy

1985 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1982-1987 Chevy C15

Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972-1982 Chevy C20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1984 Chevy C20

Gen 1 L48 Small Block Chevy

1972-1982 Chevy C20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1984 Chevy C20 Suburban

Gen 1 L82 Small Block Chevy

1972-1982 Chevy C30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1984 Chevy C30

Gen 1 L46 Small Block Chevy

1983-1987 Chevy C35

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1973-1982 Chevy Camaro

Gen 1 L48 Small Block Chevy

1973-1982 Chevy Caprice

Gen 1 L48 Small Block Chevy

1983 Chevy Caprice

2-Piece Rear Main Chevy 350

1984 Chevy Caprice

Gen 1 L48 Small Block Chevy

1985 Chevy Caprice

2-Piece Rear Main Chevy 350

1973 Chevy Chevelle

Gen 1 L48 Small Block Chevy

1973-1974 Chevy Corvette

Gen 1 L48 Small Block Chevy

1980 Chevy Corvette

Gen 1 L48 Small Block Chevy

1984 Chevy Corvette

Gen 1 L83 Small Block Chevy

1985 Chevy Corvette

2-Piece Rear Main Chevy 350

1973-1977 Chevy El Camino

Gen 1 L48 Small Block Chevy

1978-1979 Chevy El Camino

2-Piece Rear Main Chevy 350

1983 Chevy El Camino

2-Piece Rear Main Chevy 350

1984 Chevy El Camino

Gen 1 L81 Small Block Chevy

1975-1982 Chevy G10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1984 Chevy G10

Gen 1 L82 Small Block Chevy

1970 Chevy G10 Van

2-Piece Rear Main Chevy 350

1972-1974 Chevy G10 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1982 Chevy G20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972 Chevy G20 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1973-1974 Chevy G20 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1982 Chevy G30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1970 Chevy G30 Van

2-Piece Rear Main Chevy 350

1972-1974 Chevy G30 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1973-1982 Chevy Impala

Gen 1 L48 Small Block Chevy

1983 Chevy Impala

2-Piece Rear Main Chevy 350

1985 Chevy Impala

2-Piece Rear Main Chevy 350

1972-1982 Chevy K10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972-1982 Chevy K10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972-1982 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972-1982 Chevy K20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1972-1974 Chevy K30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1982 Chevy K30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1970-1974 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1975-1982 Chevy K5 Blazer

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1983 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1984 Chevy K5 Blazer

Gen 1 L48 Small Block Chevy

1985 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1973-1975 Chevy Laguna

Gen 1 L48 Small Block Chevy

1976 Chevy Laguna

2-Piece Rear Main Chevy 350

1973-1982 Chevy Malibu

Gen 1 L48 Small Block Chevy

1970-1971 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1973-1975 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1976-1977 Chevy Monte Carlo

Gen 1 L48 Small Block Chevy

1982-1983 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1975 Chevy Monza

Gen 1 L48 Small Block Chevy

1973-1974 Chevy Nova

Gen 1 L48 Small Block Chevy

1975 Chevy Nova

2-Piece Rear Main Chevy 350

1976-1979 Chevy Nova

Gen 1 L48 Small Block Chevy

1975-1979 Chevy P30

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1980-1983 Chevy P30

2-Piece Rear Main Chevy 350

1985 Chevy P30

2-Piece Rear Main Chevy 350

1970 Chevy P30 Van

2-Piece Rear Main Chevy 350

1972 Chevy P30 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1973-1974 Chevy P30 Van

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1967 GMC C15/C1500 Suburban

2-Piece Rear Main Chevy 350

1980-1984 GMC C1500

2-Piece Rear Main Chevy 350

1980-1986 GMC C1500 Suburban

2-Piece Rear Main Chevy 350

1967-1972 GMC C25/C2500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1972 GMC C25/C2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC C35/C3500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1978-1987 GMC Caballero

2-Piece Rear Main Chevy 350

1975-1978 GMC G15

2-Piece Rear Main Chevy 350

1967-1974 GMC G15/G1500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G1500

2-Piece Rear Main Chevy 350

1975-1978 GMC G25

2-Piece Rear Main Chevy 350

1967-1974 GMC G25/G2500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G2500

2-Piece Rear Main Chevy 350

1975-1978 GMC G35

2-Piece Rear Main Chevy 350

1967 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1970-1974 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G3500

2-Piece Rear Main Chevy 350

1974-1977 GMC Jimmy

2-Piece Rear Main Chevy 350

1983-1984 GMC Jimmy

2-Piece Rear Main Chevy 350

1975-1978 GMC K15

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1978 GMC K15 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K15/K1500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K15/K1500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1979-1984 GMC K1500

2-Piece Rear Main Chevy 350

1979-1980 GMC K1500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1978 GMC K25

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1978 GMC K25 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K25/K2500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K25/K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1979-1984 GMC K2500

2-Piece Rear Main Chevy 350

1979-1986 GMC K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1994-1999 GMC K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K35/K3500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1973-1977 GMC Sprint

Gen 1 LM1 Small Block Chevy

1967 GMC Suburban

Gen 1 L46 Small Block Chevy

1987-1991 GMC V1500 Suburban

350 Chevy Small Block V8

1987 GMC V2500

350 Chevy Small Block V8

1987-1991 GMC V2500 Suburban

350 Chevy Small Block V8

1987-1991 GMC V3500

350 Chevy Small Block V8