Product Summary

H-Beam Connecting Rod Type, Floating Wrist Pin Style

  • Designed for the Ford Flathead V8
  • Measure 7" in length and accept 49-53 rod bearings
  • H-beam connecting rods are made from Forged 4340 steel
  • Features a floating style wrist pin that has a 0.750" diameter
  • Connecting rod bolts are made by ARP and are made from 8740 chromoly steel
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Key Specs

MFG. Part #670021
Connecting Rod TypeH-Beam
Connecting Rod MaterialForged 4340 Steel
Connecting Rod Length7.000"
Wrist Pin StyleFloating
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Need To Know

Quick and Easy Returns

Return Policy

Scat 670021 Details

If you have ever looked at a stock Flathead Ford connecting rod, you would wonder how those skinny things ever survive. So, if you have found a good block and are going to add a longer arm and a bigger thump stick, you had better upgrade to a set of H-beam rods. They are the stock length of 7.00" and accept 49-53 rod bearings. With the added material on the big end, they require a 3.25" or larger finished bore. 

Set of 8.  

Specs

Torque Spec 50 ft/lbs w/ ARP Ultra Torque Lube

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Scat 670021 Specifications

KEY SPECS
MFG. Part #670021
BrandScat
Connecting Rod TypeH-Beam
Connecting Rod MaterialForged 4340 Steel
Connecting Rod Length7.000"
Wrist Pin StyleFloating
GENERAL
Wrist Pin Diameter0.750"
Rod Journal Diameter2.138"
Connecting Rod Bolt Diameter3/8"
Sold in QuantitySet
Rod Crank End Width0.865"
GTIN Code846091045878
Connecting Rod FinishShot-peened and tumbled
Clearanced for StrokerYes
Cap Retention StyleCap Screw
Connecting Rod Bolt BrandARP
Connecting Rod Bolt Material8740 Chromoly Steel
Fastener Yield Strength180,000 psi
Connecting Rod Bolt Head Style12-Point
Big End Bore Diameter2.138"
Weight Matched SetYes
New or RemanufacturedNew
MagnafluxedNo

Ratings & Reviews

5

2 Reviews

Overall Assessment

Customers consistently highlighted the superior quality and practicality of our product compared to competitors. Particularly, our Scat products were considered unbeatable, demonstrating the high level of customer satisfaction. Many noted their willingness to repurchase, such as the successful installation in a 1949 8BA rebuild. Qualities like usability, premium material quality, and safety underpin our product's reputation for excellence.

5

2 reviews

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Yes

5.0

5 years ago

Daryl

United Kingdom

Verified

You cannot beat scat products

Would Recommend

I would buy these again

5.0

5 years ago

Joe

Calgary Canada

Verified

Installed in a 1949 8BA rebuild

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

2 Questions • 3 Answers

Will these connecting rods work with the scat 4" stroker crankshaft for the Flathead ford

by Gerry

• 10 years ago

1 answer

are these produced in the U.S.?

by

• 15 years ago

2 answers

2 of 2 questions shown

Fitment

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

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  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

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