Product Summary

  • New one-piece rear main cast steel crank and standard size journals
  • Keith Black Hypereutectic pistons
  • Speedway 4340 full floating H-beam rods
  • Rod and Main bearings included
  • All balancing is done with our state-of-the-art "hines" balancer by race mechanics with over 30 years of experience

Comes as a Kit

See more details

Key Specs

MFG. Part #91510202
BrandSpeedway Motors
See more specs

Need To Know

Made to Order

This custom item will ship when completed

Quick and Easy Returns

Return Policy

Speedway Motors 91510202 Details

Must be purchased along with one of our complete engine rotating assemblies (service not available separately). Machining labor includes balancing the entire rotating assembly (flexplate and balancer included with this kit) and side clearancing 8 connecting rods.

For one-piece rear main blocks.

Note:  A kit purchased with this optional balance job will ship in 24-48 hours.   As such, please note that your order will then be delivered in 1 or 2 days after your estimated day of delivery indicated at check out.

Item Details

350/383 with 6.0 rods
Kit includes a 153 tooth flexplate and 8" 350 stock-style damper.

Speedway Motors 91510202 Specifications

KEY SPECS
MFG. Part #91510202
BrandSpeedway Motors

Ratings & Reviews

4.7

3 Reviews

Overall Assessment

Our product has gathered significant appreciation for its exceptional quality & practicality. Customers highlighted their value-for-money experience with the pre-balanced parts, stressing the cost & effort saved. Notably, pistons & rods come numbered, streamlining installation while maintaining balance. It's also suitable for circle track racing. Some minor concerns related to lack of documentation of bobweights & press fit pistons, yet these didn't diminish the product's overall effectiveness. Compared to local machine shops, customers felt our product offers superior convenience & value.

4.7

3 reviews

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Filter by Ratings

Can't get any easier

5.0

7 years ago

Txhotrodder

Fort Worth TX

Verified

We can all get machine work done locally.....BUT by the time I buy a flex plate and a harmonic balancer then pay for balancing this gets expensive. Pre balanced parts are a great value! Pistons come numbered and so do the rods. Match them up and install in the right order to maintain the balance. The only drawbacks are that you don't get any documentation of the bobweights and with press fit pistons I still made a trip to the machine shop.

Would Recommend

383 balance

5.0

9 years ago

Nova man

Tulsa ok

Verified

Did a good job. They even oiled it all down to prevent rust

Would Recommend

great machine shop work !

4.0

14 years ago

quicksilver

Houston , Tx

Verified

great application for circle track racing

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

1 Question • 1 Answer

For balancing can you guys do internal balancing?

by Kevin Bigelow

• 8 years ago

1 answer

1 of 1 questions shown

Fitment

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  • Gen 1 L82 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

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  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

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  • Gen 1 L82 Small Block Chevy

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  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

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  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

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  • 2-Piece Rear Main Chevy 350

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  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

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  • Gen 1 L82 Small Block Chevy

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  • Gen 1 L65 Small Block Chevy

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  • Gen 1 L82 Small Block Chevy

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  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L98

  • Chevy Small Block V8 Vortec 1-Piece Rear Main 5.7 L31

  • Gen 1 LM1 Small Block Chevy

  • Gen 1 L46 Small Block Chevy

  • 350 Chevy Small Block V8

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L98

  • 350 Chevy Small Block V8

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L98

  • 350 Chevy Small Block V8

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L05

  • Chevy Small Block V8 Gen 1 1-Piece Rear Main 350 L98

  • 350 Chevy Small Block V8

  • Chevy Small Block V8 Vortec 1-Piece Rear Main 5.7 L31

Customer Impersonation Script