Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Automatic Transmission At Speedway Motors

Shift into high gear with automatic transmission parts from Speedway Motors! We carry only the best brands like Lokar, TCI and B&M Transmission, so you know you're getting the best quality parts. With a 98% in-stock rate and same day shipping, you can count on getting your transmission parts fast!

"Flexplate, Auto Trans Flexplates" Page 1 of 1

  • 1982-95 Ford 302, 164 Tooth Flexplate
    1982-95 Ford 302, 164 Tooth Flexplate
    x
                
    • SFI approved
    • .035 thicker than stock
    • High tensile chromoly steel
    • Designed and built for racing
    • Manufactured to exceed OEM specs
    • Double welded ring gears to withstand the RPM and stress of high stall converters
    This is a 14 1/4 total OD, the converter mounting holes are 11.3480 center to center, it has a 1.7465 center mount ID and the crankshaft mounting bolt holes are 2.990 center to center. Its total weight is 8.40lbs
  • Gold Series Flexplate, 153 Tooth, SFI Rated, Small Block Chevy 1986-97
    Gold Series Flexplate, 153 Tooth, SFI Rated, Small Block Chevy 1986-97
    x
                These Gold Series flexplates are  engineered to handle extreme duty applications and designed to take the  punishment of today's high horsepower engines. The 4mm thick centerplate  provides a solid foundation for these new designs. Ring gears are  precision welded to meet SFI specifications, utilizing robotic machinery  and cold-welding process. Gold Series flexplates are engineered for excellence  and are rigorously inspected throughout the manufacturing cycle to  ensure that you receive the highest quality flexplate possible.
    • SFI 29.1 certified
    • External balanced
    • Chevy Small Block V8 & 90° V6 1986-97
    • Direct bolt on component
    • Forged one-piece steel ring gears
    • 0.035" thicker than stock flexplates
    • Constructed from cold-rolled chromoly steel
    • Long lasting gold irradiate finish that helps prevent rust
    • Features double welded ring gears for added durability

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Garage Sale - Flexplate Flathead to C-4 Transmission, 157 Tooth
    Garage Sale
    Garage Sale - Flexplate Flathead to C-4 Transmission, 157 Tooth
    x
                

    157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center. Use 7/16" Chevy flexplate bolts 101-2002902.

     

    This item is garage sale priced because it has been installed.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • Flexplate Flathead to Ford C4 Transmission
    Flexplate Flathead to Ford C4 Transmission
    x
                

    916-28900-157: 157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

    916-28900-164: 164 Tooth Version. This starter ring is used with big bellhousing. The torque converter stds should measure 11 1/2" center to center.

    Use 7/16" Chevy flexplate bolts 101-2002902.

  • Chevrolet Performance Flex Plate Shim
    $45.99
    $54.69
    Chevrolet Performance Flex Plate Shim
    x
                

    These quality flex plate shims from Chevrolet Performance are designed for use with Gen I style (Turbo 350/400, 700R4, 4L60, 4L60E and 4L85E) transmission on Gen III- and Gen IV-engines.

    • Fits Gen I style transmission on Gen III- and Gen IV-engines
    • Requires use of flat flexplate GM # 12584163 & 6 torque converter bolts GM # 11589040 or starter wil not reach
    • Requires longer bolts GM # 12563533
  • Big Block Chevy Chromoly Steel SFI 29.1 Approved Flexplate, 168 Tooth
    Big Block Chevy Chromoly Steel SFI 29.1 Approved Flexplate, 168 Tooth
    x
                Chromoly Steel Flexplate, SFI Approved - CHEVROLET 454 1970-90, Early, 168 Teeth, 2 piece rear seal, External Balance. 
            
  • Wilcap CAD-350 Early Cadillac to Chevy Transmission Adapter
    Wilcap CAD-350 Early Cadillac to Chevy Transmission Adapter
    x
                This adapter kit allows you to put a Chevy automatic transmission (Powerglide, TH350, TH400, 700R4) behind a 1955-64 Cadillac 331, 364, 390 & 429 engine. For Turbo 350, Turbo 400, or 700R4 transmission application.

    Includes adapter, flexplate and hardware.

    Must be used with starter 910-67482.
  • 1986-'97 Chevy Flexplate - 153 Tooth
    1986-'97 Chevy Flexplate - 153 Tooth
    x
                
    • Extreme Duty SFI Approved Flexplate
    • CHEV Small Block V8 1986-97
    • 153 Tooth
    • 1 Piece Rear Seal
    • Internal Balance
    • 4mm thick centerplate

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Small Block Ford 289-351W Flexplate
    Small Block Ford 289-351W Flexplate
    x
                

    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.

    Due to the unique offset of these flexplates, they will not work in conjunction with an OEM 12" torque converter.

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

     

  • Garage Sale - 1986-1994 Chevy 168 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    Garage Sale
    Garage Sale - 1986-1994 Chevy 168 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    x
                

    This is garage sale priced because it was installed.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

     

    These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. This is 168-tooth flexplate for 1985-94 externally balanced S/B Chevys (such as 305/350) with a 1-piece rear main seal. 

    Make sure you choose the correct flywheel for your application by reading our tech article.Small Block Chevy - How to Choose a Flexplate. 

  • Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
    Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
    x
                

    These non-SFI rated S/B Chevy automatic transmission flexplates are suggested whenever installing a new engine or transmission. These flexplates are for two-piece rear main seal engines ONLY.

    • (External balance, 168-tooth)
      • Dual bolt patterns, 10-3/4" and 11-1/2"
      • Flexplate O.D. 14-1/4"

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Garage Sale - Flexplate Flathead to Ford C4 Transmission
    Garage Sale
    Garage Sale - Flexplate Flathead to Ford C4 Transmission
    x
                

    916-28900-157: 157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

    Use 7/16" Chevy flexplate bolts 101-2002902.

     

    This item is garage sale priced because it's missing the SFI sticker.

     

    **NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS** 

  • Garage Sale - Pioneer Automatic Transmission Flexplate, Ford 4.9L Straight 6
    Garage Sale
    Garage Sale - Pioneer Automatic Transmission Flexplate, Ford 4.9L Straight 6
    x
                Please view the product's page for more information
            
  • Garage Sale - Flathead to C-4 Flexplate, 157 Tooth
    Garage Sale
    Garage Sale - Flathead to C-4 Flexplate, 157 Tooth
    x
                

    157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

    Use 7/16" Chevy flexplate bolts 101-2002902.

     

    This item is garage sale priced because it has been bolted on.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • Quick Time RM-925 1986-96 Chevy Lightweight Flexplate
    Quick Time RM-925 1986-96 Chevy Lightweight Flexplate
    x
                Lighter rotating weight equals faster acceleration! 

    This 2.8 lb. jewel is just the ticket to run with a racing clutch. 153 tooth. Fits 1986-1996 S/B Chevy with a one piece rear main. SFI approved.

    NOTE: Has no bolt holes nor provisions for torque converter.

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • SFI Chevy 350 Flexplate, 153 Tooth, 2-Piece Rear Main
    SFI Chevy 350 Flexplate, 153 Tooth, 2-Piece Rear Main
    x
                

    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.

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Garage Sale - Flexplate Flathead to Ford C4 Transmission, 157 Tooth
    Garage Sale
    Garage Sale - Flexplate Flathead to Ford C4 Transmission, 157 Tooth
    x
                

    916-28900-157: 157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

     

    This is garage sale priced because it has been used. 

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

  • Quick Time RM-920 1974-85 Chevy Lightweight Flexplate
    Quick Time RM-920 1974-85 Chevy Lightweight Flexplate
    x
                

    New lightweight flexplate design weighs only 2.8 lbs, but has increased strength and reliability. SFI certified to 12,500 rpm. 153 tooth for 1974-85 S/B Chevy. No bolt holds or provisions for torque converter.

    910-48366 Instructions (pdf)

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Garage Sale - Flexplate Flathead to C-4 Transmission, 157 Tooth
    Garage Sale
    Garage Sale - Flexplate Flathead to C-4 Transmission, 157 Tooth
    x
                

    157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

     

    This item is garage sale priced because it has been installed.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • Garage Sale - Chevy 454 Flexplate, 168 Tooth
    Garage Sale
    Garage Sale - Chevy 454 Flexplate, 168 Tooth
    x
                

    This item is garage sale priced because it's different from our normal inventory.

     

    **NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS**

     

    Fits CHEVROLET 454 1970-90, Early, 168 Teeth, 2 piece rear seal, External Balance.  Weighs 5.70 lbs.  11-1/8" torque converter bolt hole spacing.  14" diameter. 

  • B/B Chevy SFI Rated Steel Flexplate
    $79.99
    $89.96
    B/B Chevy SFI Rated Steel Flexplate
    x
                

    Engineered to handle extreme duty applications and designed to take the punishment of today's high horsepower engines. The 4mm thick centerplate provides a solid foundation for these new designs. Ring gears are precision welded to meet SFI specifications, utilizing robotic machiner and cold-welding process. These flexplates are engineered for excellence and are rigorously inspected throughout the manufacturing cycle.

    • SFI 29.1 certified
    • Direct bolt on component
    • Forged one-piece steel ring gears
    • 0.035" thicker than stock flexplates
    • Constructed from cold-rolled premium steel
    • Long lasting platinum finish that helps prevent rust
    • Features double welded ring gears for added durability

     

  • 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
    1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
    x
                

    These non-SFI rated S/B Chevy automatic transmission flexplates are suggested whenever installing a new engine or transmission. These flexplates are for two-piece rear main seal engines ONLY.

    • (Internal balance, 153-tooth)
      • Dual bolt patterns, 9-3/4" and 10-3/4"
      • Flexplate O.D. 12-3/4"
      • Center Hole 2-1/2"

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • 1986-1994 Chevy 153 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    1986-1994 Chevy 153 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    x
                

    These non-SFI rated Small Block Chevy flexplates are suggested whenever installing a new engine or transmission. This 153-tooth flexplate fits 1985-89 externally balanced S/B Chevys (such as 4.3/305/350) with a 1-piece rear main seal. Single bolt pattern.\

    • 12-13/16" O.D.
    • 3 on 10-3/4" bolt pattern for the torque converter

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

     

  • 1986-'97 Chevy Flexplate - 168 Tooth
    1986-'97 Chevy Flexplate - 168 Tooth
    x
                
    • Extreme Duty SFI Approved Flexplate
    • CHEV, Small Block V8 1986-97
    • 168 Tooth
    • 1 piece rear seal
    • Internal Balance
    • 4mm thick centerplate

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

     

  • 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
    1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
    x
                

    These non-SFI rated S/B Chevy automatic transmission flexplates are suggested whenever installing a new engine or transmission. These flexplates are for two-piece rear main seal engines ONLY.

    •  (Internal balance, 168-tooth)
      • Dual bolt patterns, 10-3/4" and 11-1/2"
      • Flexplate O.D. 14.09"
      • Center Hole 2-1/2"

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • 1997-Present GM LS1, LS2, LS6 Steel Flexplate, Platinum Series
    1997-Present GM LS1, LS2, LS6 Steel Flexplate, Platinum Series
    x
                

    Platinum Series 1997-up LS1, LS2, LS6 engine flexplates raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards.

    These Platinum Series Flexplates are engineered to handle extreme duty applications and designed to take the punishment of today's high horsepower engines. The 4mm thick centerplate provides a solid foundation for these new designs. Ring gears are precision welded to meet SFI specifications, utilizing robotic machiner and cold-welding process. These flexplates are engineered for excellence and are rigorously inspected throughout the manufacturing cycle to ensure that our customers receive the highest quality parts.

    • SFI 29.1 certified
    • This flexplate works for Turbo 350/Turbo 400 transmissions as well as the older 700R4 and 4L60 transmissions
    • Direct bolt on component
    • Forged one-piece steel ring gears
    • 0.035" thicker than stock flexplates
    • Constructed from cold-rolled premium steel
    • Long lasting platinum finish that helps prevent rust
    • Features double welded ring gears for added durability

    For the 1997-Present GM LS1, LS2, LS6 engines.

  • 1986-1994 Chevy 168 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    1986-1994 Chevy 168 Tooth Flexplate 1 PC Rear Main, Ext. Balance
    x
                

    These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. This is 168-tooth flexplate for 1985-94 externally balanced S/B Chevys (such as 305/350) with a 1-piece rear main seal. 

    Make sure you choose the correct flywheel for your application by reading our tech article. Small Block Chevy - How to Choose a Flexplate.

  • Garage Sale - Small Block Ford 289-351W Flexplate, 28 oz. Balance
    Garage Sale
    Garage Sale - Small Block Ford 289-351W Flexplate, 28 oz. Balance
    x
                

    This is garage sale priced because it has been installed.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   

     

    This flexplate is the same flexplate that comes with our Blueprint engine.  13-1/4" O.D.

  • Garage Sale - Flexplate, Flathead To C-4 Transmission, 157 Tooth
    Garage Sale
    Garage Sale - Flexplate, Flathead To C-4 Transmission, 157 Tooth
    x
                

    916-28900-157: 157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

    Use 7/16" Chevy flexplate bolts 101-2002902.

     

    This flexplate is garage sale priced because it has been bolted on and returned. 

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS


     

  • Garage Sale - Flathead to C-4 Transmission Flexplate, 157 Tooth
    Garage Sale
    Garage Sale - Flathead to C-4 Transmission Flexplate, 157 Tooth
    x
                

    157 Tooth Version. This starter ring is used with small bellhousing. The torque converter stds should measure 10 1/2" center to center.

     

    This is garage sale priced because it has been installed.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
    TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
    x
                

    If you want to bolt a TH350, TH400, Powerglide, and 700R4 transmission up to your LS-Series engine, you need this kit. The spacer properly positions the flexplate and supports the converter hub. For Turbo 350, Turbo 400, and 700R4 transmission application.

    SFI 29.1 approved. Dual bolt patterns: stock LS-Series and small GM bolt pattern.

    Kit includes:

    • dual bolt pattern SFI rated flexplate
    • flexplate spacer
    • flexplate to crankshaft bolts
    • instructions

    Note: Requires a 10-1/2" bolt circle converter.