Engine Compatibility: Designed to fit Small Block Ford Windsor engines including 289, 302, and 351W applications, SFI Certification: Fully SFI approved flexplate built to meet racing safety standards and direct bolt-on installation, Balanced Construction: Fully balanced and precision checked for runout to ensure smooth, reliable operation, Lightweight Performance: Lightweight design promotes quick engine response while maintaining strength under load, Heavy-Duty Steel: Manufactured from high-tensile strength steel and built .035-inch thicker than stock for added durability
Speedway SFI-Approved SBF 289/302/351W Ford 157-Tooth 28oz. Flexplate Speedway Motors
Speedway SFI-Approved SBF 289/302/351W Ford 157-Tooth 28oz. Flexplate
Sku # 57518320-28
Mfr. Part # 57518320-28
Condition
New
Brand
Speedway Motors
Sold
Each
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

 

Specs
MFG. Part #
57518320-28
Outside Diameter
13.28"
Tooth Count
157
Engine Balance
External
SFI Rating
29.1
Rear Main Seal Style
1-piece, 2-piece
Material Type
Steel
Sold in Quantity
Each
Reviews

I would buy this product again

Rated
Product Rating
by Tom on February 09, 2026

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

Yes, I recommend this product.

The flex plate I needed

Rated
Product Rating
by Robotguy on January 27, 2026

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

Yes, I recommend this product.

Excellent products

Rated
Product Rating
by Glenn on December 13, 2025

Summary: Put the flex plate in a C4/ small block f100

Yes, I recommend this product.

Excellent 50 oz 157 tooth Flywheel!

Rated
Product Rating
by Kirbo66 on October 27, 2025

Summary: 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!

Yes, I recommend this product.

Flex plate

Rated
Product Rating
by Red on December 12, 2024

Summary: Part was a direct fit .worked great

Yes, I recommend this product.

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Tech Support
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About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.