Plain 1946-1953 Flathead Alternator Bracket

#91667910

Plain 1946-1953 Flathead Alternator Bracket

Name: Plain 1946-1953 Flathead Alternator Bracket
Brand: Speedway Motors
SKU: 91667910
Price: 50.99 USD
Availability: InStock
Rating: 4.6 (66 reviews)

66 Reviews

4 Questions

Bracket fits 1946-53 Ford Flathead V8 engines
Made from heavy duty steel for durability
Available in a plain or chrome plated finish

Finish:

Plain

Chrome

$50.99

/each

In Stock

Quantity

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Product Summary

6.59" Centerline of Holes, Steel, Zinc Plated

Bracket fits 1946-53 Ford Flathead V8 engines
Made from heavy duty steel for durability
Available in a plain or chrome plated finish
Designed to work with the two narrow-belt drive systems typical of the late 1950-53 Ford/Mercury passenger cars
Must use a different fan bracket on some 1945-48 applications

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Key Specs

MFG. Part #	91667910
Brand	Speedway Motors
Material Type	Steel
Finish	Zinc Plated

See more specs

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Installation Details

Installation Tips

This bracket assembly is designed to mount the common SI-style GM alternator in a centered location on 1946-1953 Flathead Ford V8s. The brackets are intended to be used with a narrow-belt, two-belt configuration.
To use this bracket on a wide belt car or truck you would need to cut approximately 1/2" to 5/8" from the wide boss on the base of the alternator. You would also need to cut a similar amount from the spacer supplied with the bracket. This must be done to get the alternator pulley to line up with the drive belt.
Bracket usually provides enough clearance for center mounting of an alternator even on Super Dual and Triple style Flathead intakes on late style engine. The alternator mounts in front of the bracket.

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Speedway Motors 91667910 Details

Just because you've got a vintage Flathead Ford V8 in your ride doesn't mean you're stuck with the antiquated charging system. Switching to a tried-and-true GM 1-wire alternator is a great upgrade for any Flathead-equipped vehicle with a 12-volt electrical system.

Bracket fits 1946-1953 V-8 engines
Heavy-duty steel construction
Can easily be painted to match your engine
Designed to work with the two narrow-belt drive system typical of late '50-'53 Ford/Mercury passenger cars
Will not work with single wide belts unless the alternator is modified (see Notes)
3/8" I.D. hole for mounting the alternator
Tapped 7/16"-20 to mount to the engine

Application

1946-1953 Flathead Ford V-8 engines with narrow two-belt drive systems
Can be used with wide single-belt configurations with some modification
Must use different fan bracket on some 1945-1948 applications

Charts

Mounting Guide (GIF)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Speedway Motors 91667910 Specifications

KEY SPECS
MFG. Part #	91667910
Brand	Speedway Motors
Material Type	Steel
Finish	Zinc Plated

GENERAL
Mounted Height	5.50"
Overall Thickness	.875"
Centerline of Holes	6.59"
Centerline of Holes (Alternate)	2.12"
Center to Center	6.50"
Sold in Quantity	Each
Notes	May need to cut 1/2" - 5/8" from wide mount boss on alternator case to use this on '49-'50 cars and '48-'52 trucks with 5/8" belts. Equal amount would have to be cut from supplied spacer.

Ratings & Reviews

4.6

66 Reviews

Overall Assessment

According to customer reviews, the product is praised for its solid build and good fit. It has been positively highlighted for its practicality for 12v conversions and confirmed to fit a multitude of vintage car models with little to no modifications needed. The bracket is sturdy and provides quality alignment, accommodating more modern alternator models effectively. Although some modifications may be needed for narrow belts or specific car models, the product still satisfactorily meets customer needs. Users recommend this product, often above others, for its strength, finish, easy installation, and affordability.

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4.6

66 reviews

Most Liked Positive Review

5.0

The bracket was acceptable for its inten

Fit to the engine block was good. Drilled and tapped holes were well done. Overall fit and finish was quite good. If you intend to use the wide belt set up such as on some trucks then be prepared for some hand or machine work on the alternator threaded mount pad and reducing the length of the spacer tube in order to move the alternator rearward for belt alignment. The rear of the bracket that contacts the engine block could be milled down to move bracket back.

Most Liked Negative Review

2.0

Works... Sorta.

I had a similar bracket on my 1949 Fordor with the wide belts and it worked great. But this one on my 1950 with the narrow belts has issues. Using a standard gm one wire alternator, this bracket puts the alternator belt up against the fan pulley. I had to take half an inch off the alternator ear and the spacer to make it clear and it is still close. Now the alternator sits so far back it won't clear the front carb on my edelbrock 3 deuce intake. Wide belt cars should be fine, narrow belts beware.

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Alternator bracket

5.0

7 months ago

Flathead Rob

Colorado

Was easy to install and works like a charm to convert from generator to 1 wire alternator.

Would Recommend

What a great design! Love it

5.0

a year ago

Ebluvr72

Spokane, WA

Verified

this gave me a great alternative to a generator or more expensive alternator that looks like a generator. Fit well and looks amazing?

Would Recommend

I would recommend this product.

5.0

a year ago

Dip stick

Alexandria, In.

Verified

This bracket worked well, on an old Fenton duel carb intake. Had to make minor adjustments to align belts. I would definitely buy it again.

Would Recommend

I would buy this again.

5.0

a year ago

Qwerty

Asdf

Verified

Added gm alternator to my 8ba ford flathead.

Would Recommend

As advertised

5.0

a year ago

Qwerty

Asdf

Verified

As advertised

Would Recommend

Alternator bracket for Ford flathead

5.0

2 years ago

Jim

Upstate new york

Verified

Part fit perfect but you can't use the two original bolts as the threads are different you have to buy two new ones locally high quality part.

Would Recommend

Perfect fit

5.0

2 years ago

Ford52

Colorado

Easy mounting to flathead with fan assembly. The 1 wire alternator set up is so easy to set up and less maintenance using this bracket.

Would Recommend

Not OE spec threads

3.0

2 years ago

Verified

'52 Ford Alternator bracket..fits but the tapped holes are not OE specs and had to take the bracket to store to find bolts to fit..also a longer fan belt is needed as the bracket with alternator is taller than the original generator and bracket..waiting on the belt to see if it's gonna work correctly

Would Recommend

i would buy again

5.0

2 years ago

ken

30736

Verified

great for adding an altenator to you stock flatty

Would Recommend

Fits Well

5.0

2 years ago

George

Ontario, Canada

Verified

2nd time using product, works well

Would Recommend

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Questions & Answers

4 Questions • 6 Answers

Sort Questions

will this fit a 1950 F1 truck

by sy

• 9 years ago

1 answer

View Answer

Will this bracket work with a Ford G1 alternator? I would like to use the Ford alternator along with a voltage regulator as i think it may work better with the Speedway wiring harness (PN 910-64017)i recently bought. Installing on a 1950 Ford Custom Deluxe fordor.

by oldbert

• 11 years ago

1 answer

View Answer

I purchased this alternator bracket and it fits the engine/fan bracket fine, but I purchased a GM 1-wire alternator(65 amp)and the casing on the alternator hits the prongs on the alternator bracket. Is this bracket designed for a specific alternator?

by Charlie

• 11 years ago

1 answer

View Answer

where is the spacer for the plain alt. brkt ?

by old coot

• 15 years ago

3 answers

View Answers

4 of 4 questions shown

Fitment

1939-1940 Ford 1 Ton Pickup

239 Ford Flathead V8

1941-1947 Ford 1 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford 1/2 Ton Pickup

221 Ford Flathead V8

1939-1947 Ford 1/2 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford 3/4 Ton Pickup

221 Ford Flathead V8

1939-1947 Ford 3/4 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Club

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Sedan

239 Ford Flathead V8

1953 Ford Country Sedan

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Squire

239 Ford Flathead V8

1953 Ford Country Squire

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Crestline

255 Ford Flathead V8
337 Ford Flathead V8

1949 Ford Custom

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Customline

255 Ford Flathead V8
337 Ford Flathead V8

1939-1940 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford F-100

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-250

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-350

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F1

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F1

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F2

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F2

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F3

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F3

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Mainline

255 Ford Flathead V8
337 Ford Flathead V8

1942 Ford Model 21 A Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1938 Ford Model 81 A

221 Ford Flathead V8

1938 Ford Model 82 A

221 Ford Flathead V8

1938 Ford Model 85

221 Ford Flathead V8

1953 Ford Ranch Wagon

255 Ford Flathead V8
337 Ford Flathead V8

1938 Ford Sedan Delivery

221 Ford Flathead V8

1939-1940 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1941 Ford Sedan Delivery

239 Ford Flathead V8

1942 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1946-1947 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Sunliner

255 Ford Flathead V8
337 Ford Flathead V8

1942 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Victoria

255 Ford Flathead V8
337 Ford Flathead V8

1952-1953 Mercury Custom

255 Ford Flathead V8
337 Ford Flathead V8

1946-1948 Mercury Mercury

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Mercury Mercury

255 Ford Flathead V8
337 Ford Flathead V8

1950-1953 Mercury Monterey

255 Ford Flathead V8
337 Ford Flathead V8

1941 Mercury Series 19A

239 Ford Flathead V8

1942 Mercury Series 29A

221 Ford Flathead V8
239 Ford Flathead V8

1939 Mercury Series 99A

239 Ford Flathead V8

1940 Mercury Series O9A

239 Ford Flathead V8