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Shop Oval Track Automatic Transmission At Speedway Motors

Shift into high gear with Automatic Transmission parts from Speedway Motors! Featuring tranny parts from the top brands like Bert, Lokar and TCI Automotive, Speedway Motors is your transmission mega-store. Let Speedway help you get into Drive with a huge selection of parts perfect for your ride and at prices that can't be beat.

Featured Products
1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
SKU-577FRA112
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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.

TCI Automotive 741025 Powerglide Circle Track Torque Converter-10 Inch
TCI Automotive 741025 Powerglide Circle Track Torque Converter-10 Inch
SKU-28274125
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Some class rules require a stock appearing torque converter if you run a Powerglide. We offer two real converters and one 'dummy' converter that is actually a coupler with a torque converter shell attached (28274150). It reduces rotating weight and does not slip, but must be used with our circle track valve bodies. It may not be legal at your track. The real converters have had their stall altered for best performance on the track. 

To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

TCI Automotive 742010 Circlematic Powerglide, High Gear Only
TCI Automotive 742010 Circlematic Powerglide, High Gear Only
SKU-282742010
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These Powerglides are built specifically for circle track racing only. They have a 1.82:1 low gear ratio and are 27-9⁄16" long. All transmissions feature high performance clutches, steel clutch hub, and modified planetary gear set that will work with the latest rear suspensions. They weigh approximately 97 lbs. and must ship truck freight.

Dipsticks sold seperately.

TCI Auto 742018 Circlematic Powerglide Transmission
TCI Auto 742018 Circlematic Powerglide Transmission
SKU-282742018
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These Powerglides are built specifically for circle track racing only. They have a 1.82:1 low gear ratio and are 27-9⁄16" long. All transmissions feature high performance clutches, steel clutch hub, and modified planetary gear set that will work with the latest rear suspensions. They weigh approximately 97 lbs. and must ship truck freight. 

Dipsticks sold seperately.

NOTE:  For use with working converter but converter is NOT included.

"Oval Track, Automatic Transmission" Page 1 of 2

  • MSD 2760 Atomic Transmission Controller, Stand Alone
    New
    MSD 2760 Atomic Transmission Controller, Stand Alone
    SKU-5472760
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    The all-new MSD Transmission Controller was developed completely in-house “ evolving from the engineering expertise and proven performance of our Atomic EFI technology. In fact, the Atomic TCM is designed to integrate directly with the Atomic EFI when using Brainwave so you can modify transmission operation parameters from the same handheld monitor! Doing away with the need for sensor duplication, and an extra programmer, means less wiring for easy installation and a clean appearance. Dont worry if you havent stepped up to an Atomic EFI system yet; the Trans Controller is also offered as a stand-alone system to work with most OEM or aftermarket fuel injection systems, as well as carbureted applications equipped with a stand-alone Throttle Position Sensor (TPS). This allows you to take advantage of modern 4-speed overdrive transmissions and the inherent flexibility associated with electronic controls. Available as a stand alone controller or Brainwave ready Adjust the operating parameters of later model electronically controlled 4-speed overdrive transmissions Simple to configure with the supplied Handheld Monitor “ no PC required* OEM style connectors allow direct plugin to popular GM and Ford transmissions Adjust shift points, shift firmness, torque converter clutch behavior, and more Monitor the operation of your transmission in real-time The Brainwave ready TCM allows for seamless integration with the Atomic EFI controller to reduce

  • Gold Series Flexplate, 153 Tooth, SFI Rated, Small Block Chevy 1986-97
    Gold Series Flexplate, 153 Tooth, SFI Rated, Small Block Chevy 1986-97
    SKU-91048210
    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.

  • 1600-1800 Stall Powerglide Dirt Track Converter, 12 Inch Diameter
    1600-1800 Stall Powerglide Dirt Track Converter, 12 Inch Diameter
    SKU-10934140
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    We have these torque converters built specifically for circle track Powerglide use. They are available with a 1600-1800 RPM stall in 12" diameter.

    Made in the U.S.A.

    To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

  • TCI Automotive 742015 Circlematic Powerglide, High or Low Gear
    TCI Automotive 742015 Circlematic Powerglide, High or Low Gear
    SKU-282742015
    x
                

    These Powerglides are built specifically for circle track racing only. They have a 1.82:1 low gear ratio and are 27-9⁄16" long. All transmissions feature high performance clutches, steel clutch hub, and modified planetary gear set that will work with the latest rear suspensions. They weigh approximately 97 lbs. and must ship truck freight.

    Dipsticks sold seperately.

  • Chevrolet Performance Flex Plate Shim
    $45.99
    $54.69
    Chevrolet Performance Flex Plate Shim
    SKU-35512563532
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    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
  • TCI Automotive 741050 Dummy Powerglide Converter/Coupler, 10 Inch
    TCI Automotive 741050 Dummy Powerglide Converter/Coupler, 10 Inch
    SKU-28274150
    x
                

    Some class rules require a stock appearing torque converter if you run a Powerglide. We offer this 'dummy' converter that is actually a coupler with a torque converter shell attached. It reduces rotating weight and does not slip, but must be used with our circle track valve bodies. It may not be legal at your track.

    To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

  • Quick Time RM-6090 Chevy Automatic Transmission Safety Shield w Mount
    Quick Time RM-6090 Chevy Automatic Transmission Safety Shield w Mount
    SKU-91027032
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                Fits all S/B Chevy blocks. Fits Powerglide, 350 and 400 transmissions, clears 153 tooth flexplate. SFI 30.1 certified. Fits between the transmission and the motor, safety shield slides inside transmission. Makes changing motor transmission easier.
            
  • Big Block Chevy Chromoly Steel SFI 29.1 Approved Flexplate, 168 Tooth
    Big Block Chevy Chromoly Steel SFI 29.1 Approved Flexplate, 168 Tooth
    SKU-91049360
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                Chromoly Steel Flexplate, SFI Approved - CHEVROLET 454 1970-90, Early, 168 Teeth, 2 piece rear seal, External Balance. 
            
  • TCI Automotive 741025 Powerglide Circle Track Torque Converter-10 Inch
    TCI Automotive 741025 Powerglide Circle Track Torque Converter-10 Inch
    SKU-28274125
    x
                

    Some class rules require a stock appearing torque converter if you run a Powerglide. We offer two real converters and one 'dummy' converter that is actually a coupler with a torque converter shell attached (28274150). It reduces rotating weight and does not slip, but must be used with our circle track valve bodies. It may not be legal at your track. The real converters have had their stall altered for best performance on the track. 

    To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

  • MSD 2771 Harness, GM 4L70 - 2009-up
    New
    MSD 2771 Harness, GM 4L70 - 2009-up
    SKU-5472771
    x
                Use this harness to connect the Atomic TCU to your specific transmission.

    Installation Instructions (PDF)

    • For use with Atomic TCM
  • TCI Automotive 742020 Circlematic Powerglide, Low Gear Only
    TCI Automotive 742020 Circlematic Powerglide, Low Gear Only
    SKU-282742020
    x
                

    These Powerglides are built specifically for circle track racing only. They have a 1.82:1 low gear ratio and are 27-9⁄16" long. All transmissions feature high performance clutches, steel clutch hub, and modified planetary gear set that will work with the latest rear suspensions. They weigh approximately 97 lbs. and must ship truck freight.

    Dipsticks sold seperately.

  • ARP 100-2901 Chevy V6/V8 / Ford V8 High Performance Flexplate Bolt Kit
    ARP 100-2901 Chevy V6/V8 / Ford V8 High Performance Flexplate Bolt Kit
    SKU-1011002901
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    Flexplate bolts play an important role in the performance and safety of race cars and street machines alike. That’s why the fastener experts at ARP develop special bolts that are far superior to OEM hardware. Forged from aerospace alloy and heat-treated prior to thread rolling and machining.

    • Exclusive, flat, 12-point head design
    • Larger than stock shank diameter for increased strength and improved flexplate register
    • Originally developed for NASCAR Winston Cup competition
    • 200,000 psi rating
    • UHL: 0.680"
    • Thread Size: 7/16-20
    • Wrenching: 3/4"
    • Set of 6 bolts

    Fits:

    • Chevrolet 90° V6
    • 265-454 Chevy V8 with 2-Pc rear seal
    • Ford 289-400 V8
  • Chevy Flexplate Safety Shield
    Chevy Flexplate Safety Shield
    SKU-91048327
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                Safety shield required by many sanctioning bodies when running automatic transmissions. Fits Chevy only. Not SFI Certified.
            
  • TCI 744600 Powerglide Circle Track Internal Valve Body, Low Gear Only
    TCI 744600 Powerglide Circle Track Internal Valve Body, Low Gear Only
    SKU-28274460
    x
                We offer two styles of Powerglide valve bodies for circle track use. The first is the external control style that requires a hydraulic clutch style pedal assembly to allow easy starting and stopping. 

    The second is an internal style which has a reversed shift pattern and no pedal or extra valving is required. Both styles are fully manual and replace your original valve body. Must be used with either our coupler or dummy converter, not a functional converter. 
  • Powerglide Direct Drive Coupler Converter, 12 Inch Diameter, 18 lbs.
    Powerglide Direct Drive Coupler Converter, 12 Inch Diameter, 18 lbs.
    SKU-10934001
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    We have these torque converters built specifically for circle track Powerglide use. They are available as a direct drive coupler in 12" and 9-3/4" diameters.

    Made in the U.S.A.

    To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

  • Small Block Ford 289-351W Flexplate
    Small Block Ford 289-351W Flexplate
    SKU-57518320
    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

     

  • Stock Car Racing Automatic Shifter
    Stock Car Racing Automatic Shifter
    SKU-91021954
    x
                New and improved design. Shift levers and rods with heavy duty rod ends for automatic shifter. One lever with 24" rod. Fully adjustable. Anodized aluminum.
            
  • Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
    Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
    SKU-91048360
    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.

  • TCI Automotive 742010 Circlematic Powerglide, High Gear Only
    TCI Automotive 742010 Circlematic Powerglide, High Gear Only
    SKU-282742010
    x
                

    These Powerglides are built specifically for circle track racing only. They have a 1.82:1 low gear ratio and are 27-9⁄16" long. All transmissions feature high performance clutches, steel clutch hub, and modified planetary gear set that will work with the latest rear suspensions. They weigh approximately 97 lbs. and must ship truck freight.

    Dipsticks sold seperately.

  • ARP Fasteners 200-2906 Flex Plate Bolts, Small Block Chevy
    ARP Fasteners 200-2906 Flex Plate Bolts, Small Block Chevy
    SKU-1012002906
    x
                ARP flex plate bolts for small block Chevy one piece rear main seal crankshafts.  Features smaller head for socket clearance.
            
  • TCI Auto 740002 Powerglide Circle Track Kit-Internal Control Body
    TCI Auto 740002 Powerglide Circle Track Kit-Internal Control Body
    SKU-28274002
    x
                

    This kit is for those who know how to rebuild a Powerglide, but don't have all the parts to set it up for circle track use. You will need to supply a complete Powerglide transmission core. 

    Kit includes:

    • Aluminum pan
    • Valve body
    • Dipstick
    • Coupler
    • Steel clutch hub
    • Cooler
    • Filter
    • Gaskets and seals

     

  • ARP Fasteners 200-2902 Chevy Flexplate Bolts
    ARP Fasteners 200-2902 Chevy Flexplate Bolts
    SKU-1012002902
    x
                

    Flexplate bolts play an important role in the performance and safety of race cars and street machines alike. That’s why the fastener experts at ARP develop special bolts that are far superior to OEM hardware. Forged from aerospace alloy and heat-treated prior to thread rolling and machining.

    Fits Chevrolet 90° V6 & 265-454 Chevy V8 with 2-Pc rear seal. Set of 6 bolts.

    • Exclusive, flat, 12-point head design
    • Larger than stock shank diameter for increased strength and improved flexplate register
    • Originally developed for NASCAR Winston Cup competition
    • 200,000 psi rating
  • Quick Time RM-920 1974-85 Chevy Lightweight Flexplate
    Quick Time RM-920 1974-85 Chevy Lightweight Flexplate
    SKU-91048366
    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.

  • TCI 744500 Powerglide Circle Track Internal Valve Body, High Gear Only
    TCI 744500 Powerglide Circle Track Internal Valve Body, High Gear Only
    SKU-28274450
    x
                We offer two styles of Powerglide valve bodies for circle track use. The first is the external control style that requires a hydraulic clutch style pedal assembly to allow easy starting and stopping. 

    The second is an internal style which has a reversed shift pattern and no pedal or extra valving is required. Both styles are fully manual and replace your original valve body. Must be used with either our coupler or dummy converter, not a functional converter. 
  • MSD 2770 Harness, GM 4L60-85E, 93-up - 4L70 06-09
    New
    MSD 2770 Harness, GM 4L60-85E, 93-up - 4L70 06-09
    SKU-5472770
    x
                Use this harness to connect the Atomic TCU to your specific transmission.

    Installation Instructions (PDF)

    • For use with Atomic TCM
  • Winters Performance 6833 Powerglide Drive Flange for Chevy Crate
    Winters Performance 6833 Powerglide Drive Flange for Chevy Crate
    SKU-8026833
    x
                
    • Steel
    • Crank drive flange
    • Bolts to the back of '86-up 1-pc rear main seal crank
    • For use with a powerglide transmission
  • 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
    1955-1985 Chevy Flexplate for 2-Piece Rear Main, 153 Tooth
    SKU-577FRA112
    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
    SKU-91048362
    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.

     

  • 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
    1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
    SKU-91048369
    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
    SKU-57534610
    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.

  • Quick Time RM-1030 Bump Start Valve
    Quick Time RM-1030 Bump Start Valve
    SKU-91025810
    x
                Depressing aluminum valve via pedal or lever assembly locks up powerglide transmission and allows car to be push started.
            
  • 1600-1800 Stall Powerglide Dirt Track Converter, 9-3/4 Inch Diameter
    1600-1800 Stall Powerglide Dirt Track Converter, 9-3/4 Inch Diameter
    SKU-10934141
    x
                

    We have these torque converters built specifically for circle track Powerglide use. They are available with a 1600-1800 RPM stall in 9-3/4" diameter.

    Made in the U.S.A.

    To learn about how torque converters work and what to consider when purchasing one, check out our tech article. Choosing the Right Torque Converter. 

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