Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith
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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
ARP Fasteners 200-2902 Chevy Flexplate Bolts
ARP Fasteners 200-2902 Chevy Flexplate Bolts
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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.

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-6091 Chevy Automatic Transmission Midmount Plate with Safety Shield
Quick Time RM-6091 Chevy Automatic Transmission Midmount Plate with Safety Shield
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            Fits all Small Block 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. Zinc plated.
        
Small Block Chevy Flexplate Spacers
From: $18.99
Product Rating: 5.00 Stars
Small Block Chevy Flexplate Spacers
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If you don't have at least .125" between the end of the starter drive and the flexplate, you're asking for trouble. These spacers allow you the clearance needed to make your lightweight flex plate live. Includes a .030", .035", .045", .055" and .070" spacers. S/B Chevy. 

-74:  For use with '55-'85 two-piece S/B Chevy crank
-86:  For use with '86-Up one-piece S/B Chevy crank

1600-1800 Stall Powerglide Dirt Track Converter, 11 Inch Diameter
1600-1800 Stall Powerglide Dirt Track Converter, 11 Inch Diameter
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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 11" 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. 

"Oval Track, Automatic Transmission" Page 1 of 2

  • ARP Fasteners 200-2902 Chevy Flexplate Bolts
    ARP Fasteners 200-2902 Chevy Flexplate Bolts
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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.

    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
  • Winters Performance 6833 Powerglide Drive Flange for Chevy Crate
    Winters Performance 6833 Powerglide Drive Flange for Chevy Crate
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    • 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
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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.

  • Quick Time RM-1030 Bump Start Valve
    Quick Time RM-1030 Bump Start Valve
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                Depressing aluminum valve via pedal or lever assembly locks up powerglide transmission and allows car to be push started.
            
  • Small Block Chevy Flexplate Spacers
    From: $18.99
    Product Rating: 5.00 Stars
    Small Block Chevy Flexplate Spacers
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    If you don't have at least .125" between the end of the starter drive and the flexplate, you're asking for trouble. These spacers allow you the clearance needed to make your lightweight flex plate live. Includes a .030", .035", .045", .055" and .070" spacers. S/B Chevy. 

    -74:  For use with '55-'85 two-piece S/B Chevy crank
    -86:  For use with '86-Up one-piece S/B Chevy crank

  • Moroso 25900 Crankcase Evacuation System
    Moroso 25900 Crankcase Evacuation System
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    Reduces crankcase pressure throughout entire rpm range for increased piston ring seal, reduced intake charge contamination and fewer oil leaks. Track and dyno tests prove increases in engine performance. Welding required. Cannot be used on cars w/ mufflers.

    Includes 2 each: Oil Separators/Breathers, Breather/Filler Cap Grommets, One-Way Check Valve and Weld-In Nipple for header collector, use with 5/8” diameter hose.

    545-25900 Instructions (PDF)

     

  • Stock Car Racing Automatic Shifter
    Stock Car Racing Automatic Shifter
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                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.
            
  • 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
    1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth
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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, 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.

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

     

  • Lokar SK-6852 Piston 4-Speed Automatic Shift Knob
    Lokar SK-6852 Piston 4-Speed Automatic Shift Knob
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    The finishing touch for your hot rod! Satin aluminum Piston auto shifter knob is designed with a safety lock-out button and functions with the same smooth operation as Lokar's original factory installed knobs. The Teflon lining guarantees smooth operation. Knob button engraved with specific transmission shift pattern.

    All shift patterns meet NSRA safety requirements. Knobs operate with Lokar 4 speed automatic shifters ONLY.


     

  • 1997-Present GM LS1, LS2, LS6 Steel Flexplate, Platinum Series
    1997-Present GM LS1, LS2, LS6 Steel Flexplate, Platinum Series
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    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 only works for Turbo 350/Turbo 400 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
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    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.

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

  • Chevrolet Performance Flex Plate Shim
    $45.99
    $54.69
    Chevrolet Performance Flex Plate Shim
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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
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    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
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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
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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
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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 742020 Circlematic Powerglide, Low Gear Only
    TCI Automotive 742020 Circlematic Powerglide, Low Gear Only
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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 744600 Powerglide Circle Track Internal Valve Body, Low Gear Only
    TCI 744600 Powerglide Circle Track Internal Valve Body, Low Gear Only
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                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.
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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
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    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

     

  • Performance Automatic PAGMZZ502-80 4L80E Crate Transmission for BBC
    New
    Performance Automatic PAGMZZ502-80 4L80E Crate Transmission for BBC
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                Please view the product's page for more information
            
  • Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
    Chevy Flexplate for 2-Piece Rear Main, 400 Small Block, 168 Tooth
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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.

    • (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.

  • Performance Automatic PAGM350DX-R4 700R4 Crate Trans for 350 Crate Engines
    New
    Performance Automatic PAGM350DX-R4 700R4 Crate Trans for 350 Crate Engines
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                The PAGM Series Street Smart Systems are  exclusively designed to complement Todays Crate Engines. These GMPP  Crate Engines have been increasingly popular with Street Rodders and  Muscle Car enthusiasts alike. Performance Automatic has developed  customized overdrive transmission packages and has made it easy to pick a  combination for your vehicle. The PAGM Series Packages have been  designed for both performance and street ability. Our kits also include  all the necessary transmission components to complete the installation  and a 2 year warranty.

    Performance Automatic has utilized electronic, 4L80E, 4L70E and 4L60E and non- electronic 700R4 and our 765R4, overdrive transmissions to make sure they have covered the full potential of each combination.

    All electronic transmission packages come complete with:
    • “Smart Shift” transmission controller and matching wiring harness for a “plug and go, no laptop required” installation.
    • Our Street Smart Converters are designed to give that “stop light to stop light” performance and to stretch that tank full of gas running down the highway in lock up.
    700R4 Transmissions Include:
    • High Performance Clutches
    • High Performance Intermediate Band
    • High Performance Pump Mods
    • Modified Valve Body
    • Dyno Test
    • High Performance Servo
    • Aluminum Pan
    • Speedo Gear & Housing
  • TCI Automotive 742010 Circlematic Powerglide, High Gear Only
    TCI Automotive 742010 Circlematic Powerglide, High Gear Only
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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.

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