Product Summary

  • This piece couples a Harman & Collins magneto to '48 and older Flathead. FITS MODEL 8R101
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Key Specs

MFG. Part #91012720
BrandSpeedway Motors
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Speedway Motors 91012720 Details

If you're lucky enough to find a Harmon-Collins mag, it probably doesn't have the drive. This unique piece couples the mag to 1948 and older Flatheads.

Speedway Motors 91012720 Specifications

KEY SPECS
MFG. Part #91012720
BrandSpeedway Motors
GENERAL
Sold in QuantityEach
Notesfor model 8R101 PARTS: 5019 SHAFT-COUPLING DRIVE 5018-2 COUPLING-VERNIER DRIVE SHORT 5070 SPRING-COUPLING RETAINING 5069 SNAP RING.

Ratings & Reviews

4.5

2 Reviews

Overall Assessment

Customers appreciate our product for its practicality and usability, with a strong emphasis on its perfect, snug fit for Harman Collins mag on a flathead engines. It's regarded as a must-have adapter, despite requiring slight initial modification (filing) for some customers. Customers have noted that our product stands out for its superior fittedness compared to alternatives, delivering satisfactory performance, while acknowledging it as somewhat pricier than its competitors.

4.5

2 reviews

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Pleased with product but had to file the inner spline of col

4.0

2 years ago

Te Atatu

Bakersfield California

Verified

It will do the job. Seems expensive. I had to file the inner spline of the collar to make it fit magneto spline.

Would Recommend

A must-have adapter for Harman Collins mag on a flathead eng

5.0

8 years ago

None

La Canada, Ca

Verified

Fits perfectly, no looseness, but a snug fit

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

1 Question • 1 Answer

Hi, could you measure the overall length of the H&C drive. I have a H&C magneto with a lead plate but my drive is too short. Its works fine without the lead plate but it will not work with the lead plate installed. Thanks!

by Bruce L Wolfe

• 9 years ago

1 answer

1 of 1 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

  • 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

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

Customer Impersonation Script