Certified Transmissions

1022 Hwy 51. N
Covington, TN 38019
ph: (901) 476-8726
fax: (901) 476-8743
alt: 1-877-909-TRAN

High Performance

We are your source for High Performance Transmissions!

 Shift kits, recalibration packages, racing transmissions, hot rod transmissions, high performance transmissions, hardened sprag races and shafts, Powerglides, Manual valve bodies, Stall converters, Lower Gear Ratio Planetaries, Trans Brakes...

We are ready to talk racing.

We can harness those ponies and get them to the tires!

Street Rodders, Custom Hot Rodders: Retro-fitting a late-model overdrive to your earlier style engine is now easier and more affordable than ever!  The results of either of these combinations is: 

 

  • Great takeoffs
  • Stall converters
  • Overdrive for real streetability!
  • Some Stalls can retain the Converter Clutch!
For the CHEVROLET-POWERED VEHICLES:
We can use the popular THM 700-R4 and make it work behind your Chevy engine with no computer controls!
 

For the BUICK, OLDS, PONTIAC, CADILLAC FANS:

We can build the hot little THM 200-4R  to Buick Grand National specifications.  You DO remember the TURBOCHARGED Buick Grand Nationals, don't you?

FORD lovers can have their cake and eat it too, with the AOD transmission that will bolt right up to the ever-popular 302 and other small blocks.

MOPAR and the venerable "Torqueflite" transmission now has 4 speed cousins that will bolt right in, all with overdrive and converter clutch capabilities:

42RH is the hydraulically controlled(mostly).

42RE is electronically controlled.

46RH is for the larger engines and is Hydraulic(mostly).

46RE is electronically controlled.

FOREIGN CARS AND TRUCKS are not forgotten and there are many possibilities too lengthy to mention here.  Contact us for a custom quote.

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HGM Automotive Electronics has made the COMPUSHIFT. This makes it possible for us to install these computer-controlled transmissions in your project car or street rod:

    • GM 4L80E
    • GM 4L60E
    • GM 4L60E transaxle (Corvette)
    • Ford AODE
    • Ford 4R70W
    • Ford E40D
    • Ford 4R100
    • others on request
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RV'ers and RACERS alike are singing the praises of the GEAR VENDORS OVERDRIVES.

 

Is High gear too fast and Passing gear too low?
With simple BOLT-IN installation, GEAR VENDORS gives your vehicle up to twice the forward gear ratios for unparalleled performance. The UNDER/OVERDRIVE™ is built for giving you a progression of gears with 1/2 the drop in rpm of the stock vehicle so that you stay in the power with close ratio performance. More power than just an underdrive or overdrive and just one of the reasons the GEAR VENDORS UNDER/OVERDRIVE™ is the most industry awarded transmission you can buy.  Click on the picture above to go to their website for more information, then call or e-mail us for a custom quote for your RV or other vehicle.
 
Want positive action on your front wheel drive?

Now you can have it with Phantom Grip.

 

PARTS
We have a selection of Chrome transmission pans in stock as well as the popular GM Filler tube and stick assemblies and GM TV cables.
If you need it, we either have it or we can get it for you.

Copyright Certified Transmissions. All rights reserved.

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1022 Hwy 51. N
Covington, TN 38019
ph: (901) 476-8726
fax: (901) 476-8743
alt: 1-877-909-TRAN