Drag Racing Transmissions

Dedenbear Case Transmissions

Bracket Racing Transmissions

If you would like a specific recommendation from a TCI® product specialist based on your vehicle specs, click here.

Transmissions Ordering Your TCI® Powerglide Transmission The Competition Powerglide transmission is the true "workhorse" of today's racing transmissions. Without a doubt, the Powerglide is the most commonly used type of transmission on the dragstrip. TCI® has long been an innovator in the design and development of these units. Because the transmission is a fully customized unit to your particular race application, we have thousands of different combinations available. To order the transmission which best suits your needs, you will need to select the parts options desired from the chart below. All Powerglide transmissions begin with the prefix "71", "73", "74" or "76". The competition transmission part numbers are composed of eight digits. The order of placement of the digits will determine the type of transmission you will receive. The first number after the prefix determines what gear type you prefer; the second number allows you to select the transmission pan type. The third number gives you the hub and/or hub and drum and/or hub and drum plus lightweight and bearing options.  The fourth number indicates the type of input shafts available; the fifth number the type of valve body and length of transmission.  The sixth digit allows you to select the planetary ratio. The prefix "71" indicates the use of the stock General Motors aluminum case prepped by the TCI® Transmission Department. The prefix "73" indicates the use of a new Dedenbear case with SF1 spec. 4.1 internal safety liner installed. The prefix "74" indicates the use a stock Powerglide transmission case with a 743500 Gerotor pump. The prefix "76" indicates the use of the new Dedenbear case with safety liner and 743500 Gerotor pump.

Tech Tip In bracket racing, proper planning and preparation are rewarded with more wins. Most of the Powerglide equipped cars are used in conjunction with a Trans-Brake and delay box to maximize consistency and provide ease of adjustment for changing starting line conditions. An improper wiring job can cause all kinds of problems from inconsistent Trans-Brake apply, erratic reaction times, creeping and rocking in the staging beams, or complete system failure. As with other race car wiring, we strongly recommend you use adequate gauge wire, follow closely the installation instructions and solder every connection. Pay careful attention to wires that are exposed to water and road grime such as the lead connection to the Trans-Brake solenoid; a bit of weatherproofing can help prevent problems. Make sure to protect wires run through the firewall so they do not rub against the sheet metal. A strong fresh battery and an alternator are great investments for consistent performance. Another good idea is to take a few minutes to check the integrity of all connections and wires during each pre-race warm up.

EXAMPLE: Part No. 71300423 is a Powerglide with a stock case, VASCO Gear Set, Steel Pan, Steel Hub, VASCO Turbo Shaft, Standard Length Trans-Brake, 1.96 gear ratio. Case Type Gear Type Transmission Pan Hub Input Shafts Valve Body Gear Ratio 71-Stock P/G GM Case 1-Standard Set w/ Forged carrier and Ring Gear 0-Steel Pan Stock Depth 0-Steel Hub 1-TCI® Aftermarket P/G Spline Input Shaft 1-Full Manual Competition Standard Length 1-1.64 Straight Cut w/ 4140 Forged Carrier and Ring Gear 73-Dedenbear P/G Case w/ Liner 2-Super Set w/ Forged Carrier and Ring Gear 5-Cast Alum. Deep Pan 2 Qt. Extra Capacity 1-Aluminum Hub 2-TCI® Aftermarket Turbo Spline Input Shaft 2-Trans-Brake Standard Length 1-1.80 Straight Cut w/ 4140 Forged Carrier and Ring Gear 74-Stock P/G GM Case & 743500 Gerotor pump 3-VASCO Super Set w/ Forged Carrier and Ring Gear 7-Cast Alum. Pan (Stock Depth) 2-Aluminum Hub and Aluminum Drum 3-TCI® Aftermarket VASCO P/G Spline Input Shaft 3-Pro Tree Trans-Brake Standard Length 2-1.89 w/ 4140 Forged Carrier and Ring Gear 75-Dedenbear P/G Case w/ bearing & stock pump 4-Standard Set w/Forged carrier and Ring Gear w/ adj. PR aluminum valve body. 8-PRO-X™ O-Ring Style HDT™ Coated Deep Cast Aluminum Pan 3-Aluminum Hub and Aluminum Drum  w/ Bearings 4-TCI® Aftermarket VASCO Turbo Spline Input Shaft 4-Full Manual Shorty 3-1.96 w/ 4140 Forged Carrier and Ring Gear 76-Dedenbear P/G Case w/ Liner & 743500 Gerotor pump 5-Super Set w/Forged Carrier and Ring Gear w/ aluminum adj. PR valve body.   4-10 Clutch hi-drum & hi-static reverse clutches 5-TCI® Aftermarket VASCO ringless P/G spline input shaft 5-Trans-Brake Shorty 4-2.03 w/ 4140 Forged Carrier and Ring Gear 77-Dedenbear P/G Case w/ Liner & bearing & 743500 Gerotor pump 6-VASCO Super Set w/ Forged Carrier and Ring Gear w/ aluminum adj. PR valve body.     6-TCI® Aftermarket VASCO ringless Turbo spline input shaft 6-Pro Tree Trans-Brake Shorty 5-2.11 w/ 4140 Forged Carrier and Ring Gear 81-ATI P/G Super case w/ Chevy bellhousing & stock pump 7-Standard Set w/Forged carrier and Ring Gear w/ aluminum valve body.       7-Ultimate Pro Tree Brake Standard Length 6-1.76 w/ 4140 Forged Carrier and Ring Gear 82-ATI P/G Super case w/ Chevy bellhousing & 743500 Gerotor pump 8- Super Set w/ Forged Carrier and Ring Gear w/ aluminum valve body       8-Ultimate Pro Tree Brake Shorty 7-1.76 4-Link Dragster w/ 4140 Forged Carrier and Ring Gear   9-VASCO Super Set w/ Forged Carrier and Ring Gear w/ aluminum valve body.         8-1.64 straight-cut w/ 4140 Forged Carrier and Ring Gear             9-1.92 straight-cut w/ 4140 Forged Carrier and Ring Gear

  

PRO-X™ Drag Race Powerglide Transmissions
Available with 1.98, 1.80 or 1.65 Straight-Cut 12DPI Super Set Planetaries, the state-of-the-art PRO-X™ Powerglide Transmissions deliver unrivaled performance and consistency in racecars regularly running 6.70-seconds, 220+ mph in the quarter mile.

These technologically advanced transmissions feature the new PRO-X™ Ringless Input Shaft, 10-Clutch Hi-Gear Bearing Drum Kit and industry-exclusive HDT (Heat Dissipating Technology™) Coated Dedenbear Bearing Case. In addition, every unit includes the latest internal component innovations from the TCI® engineers, such as their Ringless-Style Gerotor Pump and X-Wide Kevlar Band, HDT Coated Aluminum Deep O-Ringed Pan and Hi-Flow Filter System. To further ensure every PRO-X™ Powerglide Transmission lives up to the strict TCI® tolerances and performance standards each unit is triple tested and AxiLine computer dyno-certified. Click here for the application chart.

Dedenbear™ SuperCase Transmissions This new, high performance case, manufactured for Powerglides, eliminates the flex and cracking problems that plague the OEM case design. The Dedenbear™ SuperCase is a strong, high-quality machined unit that provides consistent Trans-Brake release, less component wear, cooler operating temperatures and less binding. These new transmissions include an SFI 4.1 certified safety liner, so there's no need to run an external transmission shield. An SFI 30.1 certified bellhousing is also standard with these transmissions. Bare transmission case and other accessories are available as listed.

Description	Part No.
SuperCase w/ liner SFI 4.1 and SFI 30.1	720002
Low Drag SuperCase w/ rear case bearing, bearing gov. support and liner SFI 30.1 and SFI 4.1	720007
Dedenbear Tailhousing	720008

Applications	Part No.	712182
Full Manual 1.76 Std. Length	711176
Full Manual 1.82 Std. Length	711182
Bracket Brake 1.76 Std. Length	712176
Bracket Brake 1.82 Std. Length	712182
Pro Tree Brake 1.76 Std. Length	713176
Pro Tree Brake 1.82 Std. Length	713182
Bracket Brake 1.76 Shorty Length	715176
Bracket Brake 1.82 Shorty Length	715182
Pro Tree Brake 1.76 Shorty Length	716176
Pro Tree Brake 1.82 Shorty Length	716182