Welcome to ProBuilt Automatics

Notice To Visitors

For those of you who have e-mailed me and did not receive a response, please e-mail me again. If you are trying to put in an order and have problems doing so, please notify me by e-mail dana@probuiltautomatics.com or call me anytime. 909 795-1876. This website was being moved and updated and has had some problems in transition, and I would like to resolve them asap. I apologize for any inconvenience.

    For those of you interested in building your own Heavy Duty or Performance transmission, then you have come to the right place. We offer very complete automatic transmssion rebuild kits. They come with "everything" that is needed to do this right the first time. Our kits offer you the best of both worlds, smooth part throttle 1-2 upshifts, quicker downshifts, and very quick wide open throttle shifts. We offer these very complete rebuild kits from Heavy Duty to the Pro Street Elite for several transmissions. You can call me anytime at 909 795-1876 with your questions on what is required for your particular application. 

In the automatic transmission rebuild kits, the options are in such a way so that you cannot make a wrong choice. We are always improving the rebuild kits to improve longevity.

To get the best results when using my Heavy Duty through the Pro Street Series automatic transmission rebuild kits, we highly recommend the Circle D, or Edge torque converters for the 700R4, 4L60E and 4L80E transmissions, both in terms of performance & longevity.

We also carry a complete line of Heavy Duty & Performance Automatic Transmission Rebuild kits, along with TransGo Shift kits & TransGo Performance Shift kits for most of the other Chevrolet, Ford, & Mopar automatic transmissions. You can always call me on most evenings or weekends with questions & assistance. 909 795-1876, or an E-mail dana@probuiltautomatics.com

ATSG build books are available for each transmission rebuild kit. Rebuild DVD's available also.

With the DVD's, ATSG rebuild books, and the technical information that we can provide, you should be able to build your automatic transmission "of your choice" successfully, the first time.


40+ Years of Experience


  • I have been concentrating on the problems of 700R4 & 4L60E, for several years now, and have come up with some "solid" solutions in terms of longevity.  
  • By paying very close attention to details, clearances, and the right combination of parts, I and others using my automatic transmission rebuild kits have been able to get many vehicles in the 11's, quite a few in the 10's, and a few in the 9's successfully.
  • This shows you what 4L60E's and 700R4's are capable of. So it can be done, and you can do it with the right parts & information.
  • Ed Wright of www.fastchip.com is highly recommended to solve the computer problems of the OBD1 and OBD2 that are used with the 4L60E transmissions since 1993. 
  • If you have a 4T65, EV/GT transmission, Talk to David Norris at Triple Edge Performance. They offer stock to highly modified 4T65Es, upgraded parts, solutions that work, and technical support to assist the do-it-yourself customers, before - during - and after the rebuild. Go to: http://tripleedgeperformance.com/Home-Page.html They will give you the best information for the 4T65E transmission. 
  • If you are looking for a “A true plug and play design” transmission controller. Go to: http://etranscontrol.com/ They are the home of the most simple to setup transmission controllers for after market or OEM. Works with GM 4L60E to 4L80E, GM 4T45E to 4T80E and Dodge 47RE & 48RE transmissions.

   

General Motors Transmissions

With over 40 years of experience in Heavy Duty to Strip only transmission building, I have found many solutions to making a Heavy Duty or Performance transmission do the job correctly for a particular application. We offer the 700R4 & 4L60E transmissions in the Heavy Duty, Street/Strip, Pro Street, and Pro Street Elite. These transmissions, the 700R4 and 4L60E, come with an "18 month" warranty.                                      

To get the best results with the Heavy Duty through the Pro Street Series transmissions. We highly recommend using the Circle D or Edge torque converters for the 700R4 & 4L60E transmissions, both in terms of performance & longevity. 


4L60E 

4L60E LS Series

700R4

Contact Us

ProBuilt Automatics

Calimesa, California, 92320

909 795-1876