Extreme Automatics has moved. Extreme Automatics has Merged with Griner Engineering and is now located in Mulberry, IN.
Our Phone number will be changing to (513)898-0553.
Extreme Automatics and Griner Engineering as a partner will be offering the highest quality products available for the transmissions we service.
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Welcome to the new Extreme Automatics website. Here you will find information about the products and services we offer.
Transmissions our driving force. We build and supply parts for the following models.
2004R, TH400, 4L60E, 4L80E, 4L65E Torque Flite 727, 904, 45-48RE
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| The "Mac Daddy" TH200-4R built for 850HP |
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Extreme Automatics is developing our own line of Billet 2004R parts. We will introduce the highest quality tier 1 product available for the 2004R. These new parts include the Billet forward drum shaft, Billet OD planet (rebuild able), Billet OD ring gear, Billet Input Shaft, Large Intermediate servo.
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| 86/87 TV Cable |
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| Reproduction 86/87 Turbo Regal detent cable for 2004R. This cable is the correct direct fit replacement for the 86/87 Turbo Buick. Click on Pic for more info.
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| 4L80E |
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| Coming Soon TH-400 and 4L80E Package for Cummins Turbo Diesel. We are working on a complete affordable package to install 400 or 4L80E in your Cummins powered truck or project. The 48RE cost thousands of dollars and still will not handle the power reliably. If you are looking for a dependable super strong transmission for your Daily driver, Tow Beast, Drag Truck or Off Road 4WD this package is for you. Check back for details. Target release date late summer 2009. Call for more details.
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| Hi Carbon Band |
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| New Product for 2004R !!!!!!!!!!
Extreme Automatics after 2 years of testing is releasing our 100% Carbon Fiber band for the 2004R. The Carbon band can take the heat like no other. This band has more hold capacity than the Alto wide band and quicker shift time. The Carbon band will live threw a hard slip with no problems where the Alto will glaze over and fail. This band is made for Extreme Automatics only and is used in all of our 2004R builds and is not for sale. This is not the cheeper "Carbonite" band made by Alto.
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| Stage 2 2004R Click for details |
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| $1895.00 No Core Charge
Can Also be purchased threw the following Dealers
Cottons Performance
Excessive Acceleration
G-Body Parts
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| Maximum Cooling |
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| We have put together the best transmission cooling kit money can buy. The Kit includes all lines, fittings, temp switch everything needed to install. This kit is for mounting to the floor pan under the drivers seat. No need to run those lines up to the front of the car. This is all that is needed for any street car, race car, Truck Etc. $312.50 Shipped Call for details
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We Specialize in the 2004R, 4L60E, TH-400, 4L80E, Allison 1000/2000 Automatic Transmissions. We have been building and modifying these units for 13 years. We are adding the Torque Flite to the Arsenal of transmissions. We are also developing a bullet proof version of 4R70W to be used in many applications.
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Extreme Automatics is a proud sponsor of the TSM Point Series.
Click Here for further details.
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