1939-53 Flathead Ford Rotating Assembly, 304 C.I.
1939-53 Flathead Ford Rotating Assembly, 304 C.I.
Scat

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#915296

1939-53 Flathead Ford Rotating Assembly, 304 C.I.

  • Designed to for the 1939-1953 304 C.I. Ford Flathead V8
  • Features new Scat crankshafts and H-beam connecting rods with 2" journals
  • Pistons have a flat style top and are made from forged aluminum
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Bore/Stroke:

3-3/8" Bore / 4-1/4" Stroke

3-5/16" Bore / 4" Stroke3-5/16" Bore / 4-1/8" Stroke

$2,477.99

/kit

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Product Summary

4.250" Engine Stroke, H-Beam Connecting Rod Type

  • Designed to for the 1939-1953 304 C.I. Ford Flathead V8
  • Features new Scat crankshafts and H-beam connecting rods with 2" journals
  • Pistons have a flat style top and are made from forged aluminum
  • Rod journal diameter measures exactly 2"
  • Components are balanced and ready to be assembled

Comes as a Kit

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Key Specs

BrandScat
Connecting Rod TypeH-Beam
Piston StyleDome
Piston MaterialForged Aluminum
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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

3-3/8" bore
4-1/4" stroke

Specifications

KEY SPECS
BrandScat
Connecting Rod TypeH-Beam
Piston StyleDome
Piston MaterialForged Aluminum
GENERAL
Engine Stroke4.250"
Rod Journal Diameter2.000"
Notes3.312 DIA BORE
Sold in QuantityKit

Ratings & Reviews

4.8

4 Reviews

Overall Assessment

Customers are highly pleased with our product - the complete balanced assembly for a 304 CI Flathead build. They appreciate its excellent quality and make mention of standout features such as the stroker scat crank, J&E Pistons, I Beam Rods, rods bearing, and the coated skirts on the piston. Its usability in different motors such as the French block Flathead is praised. Customers find the assembly practical in eliminating the need for old parts and reducing problems. They consider it high value for money compared to competing products, and intend to repurchase.

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4.8

4 reviews

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Great product but make sure you confirm some details

4.0

a year ago

Flathead

UK

Verified

the rotating assembly is of great quality, but do make sure that the pistons are as you require. For example, they are advertised as flat top pistons but they're not, they are domed. This caught me out.

Would Recommend

I will buy again

5.0

3 years ago

hotrod

ohio

Verified

304 CI Flathead build

Would Recommend

yes

5.0

6 years ago

clyde28075

charlotte NC

Verified

This complete balanced assembly is a Beautiful High Quality piece really nice stroker scat crank came with J&E Pistons With the Skirts coated with a nice dome on the piston. Came with the rod Bearing And all the rings And some really nice I Beam Rods This is a Awesome Kit for the Money. Going in my French block Flathead in a 34 Ford Tudor

Would Recommend

Will buy more

5.0

7 years ago

flathead Dave

ca

Verified

dont have to use old parts and less problems

Would Recommend

Showing 4 of 4 reviews

Questions & Answers

7 Questions • 10 Answers

Can I get this crank shaft with 3 5/16 bore pistons

by Ralph

• 7 years ago

1 answer

View Answer

Where are these parts made?

by 39 vert

• 8 years ago

2 answers

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I have the scat flathead ford 33/8 bore and 41/4 stroke kit and I am using the offenhauser 560-1068 heads. will this work or will the compression be to high?

by Tommy townails

• 9 years ago

1 answer

View Answer

Can I use these heads I want to very if this will work, Offenhauser 1069-400 1949-53 heads with 1939-53 Flathead Ford Rotating Assembly, 304 C.I.? Do you for see any issues?

by ooneill

• 11 years ago

1 answer

View Answer

more on machine work Previously asked was "is machine work necessary" Of course we all know a bore is required, but what of the lower portion of the block? (for stroker rod and crank clearances)

by KingZed

• 11 years ago

1 answer

View Answer

Will the 3 3/8 bore required to run this kit in a 49 ford block make it run hot?

by 49er

• 12 years ago

2 answers

View Answers

machineing Hello will this kit requier additional machine shop work in a stock 1951 merc 255? also when i try to add the main bearings 9101536-STD it give an error that this item can not be purchased. please advise. i will be in the US in two weeks and plan to visit your company to buy the items in my wish list to bring back to Brazil. gator

by gator

• 12 years ago

2 answers

View Answers

7 of 7 questions shown

Fitment

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

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Customer Impersonation Script