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Speedway Motors

#57518320

Small Block Ford 289-351W Flexplate

Name: Small Block Ford 289-351W Flexplate
Brand: Speedway Motors
SKU: 57518320
Rating: 4.7 (18 reviews)

18 Reviews

16 Questions

Flexplate is designed to fit the 289-351 Windsor Small Block Ford engine
It is fully balanced and checked for runout
Features a lightweight design for rapid engine response

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Starting from

$95.36

/each

In Stock

$114.43

Save $19.07

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Product Summary

13.28" Outside Diameter, 157 Tooth Count, Steel

Flexplate is designed to fit the 289-351 Windsor Small Block Ford engine
It is fully balanced and checked for runout
Features a lightweight design for rapid engine response
Constructed from a high tensile strength steel and is .035" thicker than stock pieces
These 157 tooth flexplates are fully SFI compliant

See more details

Key Specs

MFG. Part #	Select Balance
Tooth Count	157
Engine Balance	External
SFI Rating	29.1
Rear Main Seal Style	1-piece, 2-piece

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Need To Know

Need help?

855.313.9176

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Details

Here are some strong, affordable flexplates for you guys running 289/302/351W small block Ford engines. Built from high-tensile chromoly steel, these flexplates are SFI approved and .035" thicker than stock pieces.

Double welded ring gears will withstand the torque generated from high-stall converters, while the lightweight design promotes rapid engine response. The 157-tooth flywheels are available in 28 or 50 oz.

SFI approved
Direct bolt-on component
Balanced and checked for runout
Lightweight design for rapid engine response
Constructed from a high tensile strength steel

CA WARNING:

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

Specifications

KEY SPECS
MFG. Part #	Select Balance to see
Brand	Speedway Motors
Tooth Count	157
Engine Balance	External
SFI Rating	29.1
Rear Main Seal Style	1-piece, 2-piece
Material Type	Steel

GENERAL
Outside Diameter	13.28"
Sold in Quantity	Each

Ratings & Reviews

4.7

18 Reviews

Overall Assessment

Customers highly recommend this product for its impressive quality and perfect fit. The flexplate functions as expected and facilitates easier cam degreeing. It has been particularly praised for its role in engine conversions, as well as its perfect alignment with starters. Compared to others, it's found to be well-built and affordable, contributing to its excellent value for money. Overall, customers found this flexplate to be functional, high-quality, and a standout choice for their vehicle upgrade needs.

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4.7

18 reviews

Most Liked Positive Review

5.0

157 tooth 50 oz. Flexplate

Installed late model 5.0 to late model c4, found this flexplate for the tooth count and 50oz.imbalance I needed for the newer engine. Very impressed with part quality, perfect fit to engine and torque converter. Thanks for a great affordable product!!

Most Liked Negative Review

1.0

this flexplate is good quality

I replaced my old flexplate with this small block ford flexplate, because I was changing from a larger bellhousing. This flexplate is good quality and I had absolutely no problems with any of it...merely taking the old one off and replacing with this new one....my starter lined up with it perfect and had it started in no time. Thankyou for a great priced flexplate!

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Great option

5.0

4 months ago

Tmetrvl65

Show Low, AZ.

Verified

I appreciate the option to use a flex plate that will fit the diameter and tooth count of my current 1965 c4, but with a newer motor that needed a 50oz balance.

Would Recommend

Great quality flex plate

5.0

8 months ago

Joe

Phoenix AZ

Verified

Worked out great with an older c4 transmission connected to a 90s 5.0. Installed in a '69 F100

Would Recommend

I would buy this product again

5.0

9 months ago

Tom

Purdy, mo

Verified

This is a good quality flex plate. Fit prefect can't wait for racing season

Would Recommend

The flex plate I needed

5.0

9 months ago

Robotguy

Huntsville AL

Verified

If you are putting a roller block in an older car with a C4 Trans, this is what you need.

Would Recommend

Excellent products

5.0

11 months ago

Glenn

Dayton Nv

Verified

Put the flex plate in a C4/ small block f100

Would Recommend

Excellent 50 oz 157 tooth Flywheel!

5.0

a year ago

Kirbo66

Utah

Verified

This Flexplate for the 50oz 157 tooth worked perfectly to run the 87-93 Ford 5.0 with a C4 auto. The Flexplate was well made and mounted up perfectly. I would definitely buy it again!

Would Recommend

Flex plate

5.0

a year ago

Red

Easley, sc

Verified

Part was a direct fit .worked great

Would Recommend

I recommend this Flexplate

5.0

2 years ago

Terry

Piedmont Alabama

Verified

I installed this flexplate on a 70's Ford 351W . It is very nice quality , twice as thick as the factory flexplate I removed . If I ever need another I will definitely look at Speedway again .

Would Recommend

I reccommend this to everyone

5.0

3 years ago

Joe

Verified

Good quality &fit well made degreeing cam much easier

Yes

4.0

4 years ago

DannyB

Maine

Verified

I haven't run my motor yet should work fine

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Questions & Answers

16 Questions • 10 Answers

Sort Questions

Replacing a 1965 289 Ford with a 1985 5.0 Ford using original Cruiseomatic trans will this flexplate work ?

by Fordman

• 10 years ago

1 answer

View Answer

what size are holes for mounting the torque converter? my converter has 3/8 studs.

by woot

• 10 years ago

1 answer

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Is this flexplate have a 10.5 inch bolt pattern.

by Seth

• 10 years ago

1 answer

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Can I use my stock starter with this flexplate

by alex

• 11 years ago

1 answer

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Hello, I have 1991 5.0 mustang engine with a C4 transmission, 10 1/2in bolt to bolt torque converter. Will this flex plate work for me, and what starter would I need to use. Thank you

by alex

• 11 years ago

1 answer

View Answer

Hey, just wondering if this flexplate will work with the Bert drive flange to run a Bert transmission. Thanks

by DD22

• 11 years ago

1 answer

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Will this work with the one peice seal on my 1988 mustang cobra engine for swapping a c4 into it?thanks

by Superbad

• 11 years ago

1 answer

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What size harmonic balancer shouId i go with? I have an internal balanced crankshaft that came with my stroke kit, but still have no flexplate or harmonic balancer. I am aware that I will need zero imbalance for both, but because the harmonic balancer is sold in different sizes, what size would i have to go with in terms of thickness and width. I know this will change the weight of the harmonic balancer. Also, shoulder I balance the crank with only the flexplate and Bob weights on an engine balance in order to determine the size ( weight) I need?

by machinetech

• 11 years ago

1 answer

View Answer

will I need a 28oz. or 50oz. weight? I have an internal balanced crankshaft that came in part with a stroker kit assesmbly ordered from Summit but did not come with flexplate or harmonic damper. Do I need a 28oz, 50oz or a zero imbalance flexplate.? Also, what weight harmonic damper will I possibly need for this as well?

by machinetech

• 11 years ago

1 answer

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69' 250 six to a 69' C6 Hello I need a 13.25 diameter with 157 teeth and 0 ZERO balanced flywheel, will this do the trick

by McVann

• 12 years ago

1 answer

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