700R4, 4L60E & 4L80E Performance Transmission Rebuild Kits & Transmissions

Welcome to Pro Built Automatics

700R4 & 4L60E Transmission Specialists

Building your own 700R4, 4L60E including the 4L80E, from Heavy Duty to a Performance transmission, then these "very complete" rebuild kits from Heavy Duty to Pro Street Elite for the 700R4, 4L60E & 4L80E transmissions, are what you want and need.                                                                                                                                                                                                                                 Many using these automatic transmission rebuild kits have been able to get their vehicles in the 11's, the 10's, and quite a few in the 9's successfully. These kits offer you the best of both worlds, smooth quick part throttle 1-2 upshifts, quicker downshifts, and very quick wide open throttle shifts. We are always updating the rebuild kits to improve longevity.                                                                                                                                                                                                                                  This shows you what 4L60E's and 700R4's are capable of, and you can build a Heavy Duty or Performance transmission yourself, or with the help of a competent builder. Complete 700R4, 4L60E & LS4L60E transmissions are available from Heavy Duty to Pro Street Elite with a 2 year warranty. You can call me most anytime, including evenings and weekends with any questions 909 795-1876 or text me at 909 435-5360 

E-mail dana@probuiltautomatics.com                                                                                                                                                                                                                                   By the way, I have complete kits for E4OD, 4R100, AOD, A0DE, TH350 & TH400. I have been doing this for over 40 years now. 

What We Do: 41+ Years of Experience


  • I  have been concentrating on the problems of 700R4 & 4L60E, for many 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.
  • If you have any questions, feel free to contact me at 909-795-1876 or text me at 909 435-5360


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

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ProBuilt Automatics

Calimesa, California, 92320

Call me at 909-795-1876 or Text me at 909-435-5360