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Hays Steel SFI Certified Flexplate - Big Block Chevrolet

1970-1990 Chevrolet 454 Big Block, 168-tooth, External Balanced

PART# 10-020

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$105.00   Suggested Retail
$85.01   Holleydays Price
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Hays heavy duty Flexplate for high performance competition Chevy engines are constructed of a thicker than stock steel plate. This enables them to withstand the stress of high-stall torque converters and high-RPM engines. These flexplates are supplied with a ring gear that is securely welded in place and feature a dual bolt pattern for use with a Powerglide or Turbo style torque converter. This flexplate has a 168 tooth ring gear and fits the externally balanced Chevy 454 V8 engines. It is S.F.I. 29.1 certified and zinc dichromate plated to resist corrosion. Other applications available.


  • S.F.I. 29.1 Certified
  • 168 Tooth Ring Gear
  • Designed for Externally Balanced 1970-90 Big Block Chevy 454 V8 engines
  • Zinc Dichromate Plated
  • Externally Blanced
  • Designed for vehicles with a 2-piece rear main seal


# of Teeth168
Application1970-90 Big Block Chevy 454
Center Bore (Register Diameter)2.490"
Emission Code5
Engine BalanceExternal
Product TypeFlexplate
SFI Certification29.1
Warranty90 Day
Part Number10-020



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Warranty Information

90 Day: See Details



    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

     X  Holleydays 2020 20% off and DD
     X  Holleydays 2020 20% off and DD