Product Summary

  • Rotating assembly will fit the 1939-1953 Ford Flathead V8 engine
  • Scat H-beam connecting rods feature 2" journals
  • Components are delivered fully balanced
  • Features a 3-5/16" bore and a 4" stroke
  • Pistons are constructed using forged aluminum and have flat style top

Comes as a Kit

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Key Specs

BrandScat
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Need To Know

Quick and Easy Returns

Return Policy

Details

These 1939-53 flathead stroker kit rotating assemblies feature new Scat crankshafts, new Scat H-beam connecting rods with 2" journals, Premium forged three-ring pistons, rod bearings, and piston rings. The components are balanced and ready for you to assemble.

Main bearings sold separately. If you have a 39-48 engine you will need a set of 9101535-STD main bearings. A 49-53 engine will require a set of 9101536-STD main bearings.

Item Details

3-5/16" bore
4" stroke

Specifications

KEY SPECS
BrandScat
GENERAL
Sold in QuantityKit

Ratings & Reviews

4

5 Reviews

Overall Assessment

Customers appreciate the high quality of the product and note that its components, specifically pistons and rods, are top-notch and well-matched. The already balanced assembly is lauded for its practicality and ease of installation, highlighting its user-friendly nature. They perceive the product akin to expert craftsmanship. Customers are eager to use it, indicating positive anticipation and satisfaction. Some users, however, note that certain parts may be hard to replace due to unavailability for immediate purchase.

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4.0

9 months ago

Ry

Shelton Ct

Verified

Complete balanced bottom end, not that much more expensive than having original parts reconditioned

Would Recommend

Be aware

1.0

4 years ago

Jeff

Cody wy

If you have any fitment issue, the parts are not available except special order (60 to 90 days ) . Pistons, Rings(my particular issue) are not stocking items from vendor ( JE ) or Speedway ,so no replacement are available and speedway won't separate any assembly's to help out . Now I'm waiting for 2 to 3 months for a replacement ring.

Would Not Recommend

Pistons and rods are like jewelry.

5.0

4 years ago

Lars

Parkers Prairie, MN

Verified

I can't wait to button up this little street motor.

Would Recommend

Impressive Rotating Assembly

5.0

7 years ago

Bentley

Connecticut

Verified

The kit has not been installed as yet. Every part checks out and is of high quality.

Would Recommend

Nice easy package to make sure all components are matched

5.0

8 years ago

Mike

Stark,NH

Verified

Just bolt this all together in a properly prepared block . A bonus is that the assembly is already balanced.

Would Recommend

Showing 5 of 5 reviews

Questions & Answers

4 Questions • 4 Answers

The Block is in good condition. Must i sleeve the block for 3,313 overbore or is the wall tight enought? 1947 block 3,1875 STD bore 59A Block with bellhousing.

by Thomas

• 7 years ago

1 answer

Is it possible to get this set whit 3-3/16"plus overbore pistons?

by Leo

• 9 years ago

1 answer

Will the pistons pop up above the deck surface? Will it work with Edelbrock 1125 65cc heads or will the heads need machining? Thank you.

by englishdave

• 13 years ago

1 answer

What rod bearing inserts are used on these 2 inch journals? Can Ford 21A connecting rods with the 2 inch floating bearings be used on the these scat crankshafts with 2 inch journals?

by Mike

• 15 years ago

1 answer

4 of 4 questions shown

Fitment

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Customer Impersonation Script