Mad Dog Transmissions has been in business since 1986. For 30 years we have been serving not only the United States but the world. The owner “Mad Dog” Lou is a second generation transmission builder who got his start building in his families shop. “Mad Dog” Lou is a racer himself, and learned a lot of our trade secrets doing work on his own race cars. We specialize in GM Transmissions but can rebuild any make or model. Not only do we ship throughout the world, but we have a fully functioning shop in Alpharetta, GA where we are able to not only build you a bullet proof transmission we can also remove and replace them as well. Our specialties are the TH350, TH400, 4L60, 700R4, 4L60E, 4L65E, 4L70E, 4L80E, 6L80E, 6L90E and 2 Speed Powerglide transmissions. We also do trans-brakes for you Bracket racers out there and have done transmissions for many vehicles on the Power Tour. For those racers who also use their vehicle for Street to Strip we got you covered too. Our transmissions range from our level 1 transmission that holds up to 300 HP to our level 5 transmission that holds up to 900 HP. We don’t stop there though, we can build up to 1500 HP just let us know what you’re looking for and we can build it. We do everything from your daily driver to you high performance racing transmissions. We use all above stock parts in our units. You can check out the description section of our transmissions for more information on what parts we use for each unit.