153 tooth flexplate for internally balanced 350 Chevy engines, Requires balancing plate when used on a 383, 400 and 454, This piece features a 2 1/2" I.D. center hole, Flywheel measures 0.342" from the engine side of the ring gear to the crank face, Has a natural steel finish
SFI Chevy 350 Flexplate, 153 Tooth, 2-Piece Rear Main Speedway Motors
SFI Chevy 350 Flexplate, 153 Tooth, 2-Piece Rear Main
Sku # 91048359
Mfr. Part # 91048359
Condition
New
Brand
Speedway Motors
Sold
Each
Details
  • SFI rated 153 tooth flex plate for internally balanced Chevy 350 engines
  • Requires balancing plate for use on 383, 400 and 454.
  • Has 2 1/2" I.D. center hole.
  • Designed to fit standard OEM, aftermarket replacement, and high performance torque converters
  • SFI 29.1 certified
  • Forged one-piece steel ring gears
  • 0.035 in. thicker than stock flexplates
  • Constructed from cold-rolled chromoly steel
  • Long lasting zinc plated finish

Make sure you choose the correct flywheel for your application by reading our tech article. Which Flexplate do I Need?

 

Specs
MFG. Part #
91048359
Outside Diameter
12.75"
Tooth Count
153
Engine Balance
Internal
SFI Rating
29.1
Rear Main Seal Style
2-piece
Hole Diameter
2.50"
Material Type
Steel
Finish
Natural
Sold in Quantity
Each
Notes
For internally balanced Chevy 350, requires balancing plate for 383, 400, 454. Measures 0.342" from the engine side of the ring gear to the crank face.
Reviews

Would buy again

Rated
Product Rating
by John on November 26, 2024

Summary: Order for a hobby stock, had to enlarge the holes for torque converter but work perfectly otherwise

Yes, I recommend this product.

Yes

Rated
Product Rating
by Goat on February 01, 2024

Summary: Great product

Yes, I recommend this product.

Will definitely buy another one

Rated
Product Rating
by Slim on February 09, 2023

Summary: Direct fit

Yes, I recommend this product.

great product for a difficult installation.

Rated
Product Rating
by DWSUPERSTAR on November 17, 2022

Summary: Installing my small block Chev in my very narrow frame rails (24") overall, on my 33 Willys I Had to use the inner bolt patten on my starter to get it to fit, making it necessary to go to a 153 tooth flex plate, making it the end of my problem. Thanks.

Yes, I recommend this product.

Worked great for my IMCA open engine.

Rated
Product Rating
by Devyn on November 02, 2021

Summary: Worked great for my IMCA open engine. Will use this in the future. Durable and fast delivery.

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.