The ULTIMATE 4l80 builder & MY experience !!!!
I made a post about the seriously poor service & operation of a vendors valve body. Jake of Jake"s performance transmissions replyied with a post that he"d send me a free valve body just for posting feedback. I felt the very least I could do is send some money to cover shipping. which he didnt ask for OR want.
well, with the new valve body in, the trans still had a slight slip going into 3rd gear, jake stated the clutches had probably slipped with the other valve body and the clutches would show they"d been slipped. Jake OBVIOUSLY had previous experiance with this other valve body, because it looked JUST like he said it would !!!!!
pulled the trans and took it to a local NON performance trans guy, told him to pull the guts out and look at 3rd gear, sure enough , it looked just like jake said it would, he stated all that needed done was replaceing these { they still looked brand new,but you could see where they had been slipped} so I told the guy to replace only the 3rd gear clutches, put it back in and WALLA !!!! this has got to be the baddest 4l80 on the market !!!!
my car makes just over 1000rwhp and this trans shifts nice and firm at part throttle and Immediatly under WOT !!!!!! I STILL can"t believe how damn good it works !!!!
If your looking for a stand alone NO electronics. trans break, forward pattern valve body OR complete transmission you HAVE to keep Jake in mind... this guy didn"t know me from JACK !!!!
I STILL CAN"T BELIEVE WHAT THIS GUY DID FOR A COMPLETE STRANGER !!!!! I can tell you I have a couple of HIGH dollar transmissions, and have NEVER had this kindof service.
anyone in the henderson KY area is free to stop in and go for a ride . the transbreak release time was great also. I"d say it was just like a normal break release time. nothing like FINALLY haveing a bulletproof trans with overdrive !!!!!!!
THANKS AGAIN JAKE !!!!!
http://www.jakesperformance.com/
You can also reach him by calling the shop:
(940) 458-5564
I think it"s VERY important to let fellow racers KNOW that there is someone out there makeing there OWN VALVE BODY thats affordable . AND WORKS !!!!! with a stock pan !!!!!
this is good to hear.......thanx for stepping up to the plate jake...my hat is off to you!
major props!!!!! people dont forget this.....
happy holidays to all!!!!!
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Jake is helping me decide what route to go and his prices are awesome!
I'm just too poor for the 80 - might go TH400 instead - still appreciate a great vendor
this is good to hear.......thanx for stepping up to the plate jake...my hat is off to you!
major props!!!!! people dont forget this.....
happy holidays to all!!!!!

I have tried several 4L80 transbrakes without great success. One was a former sponsor here who was selling garbage. Absolute POS that had huge issues.
Another one I tried was from the same vendor as Steve got his from. I'm sure you could guess who but it had quirks that would kill clutches over time and also had an issue with 1-2 WOT shift when hot.
I finally developed my own and eliminated all the issues.
When I saw Steve suffering from the same frustration I dealt with, we gave him a brake to help him out and as a bit of a "one-up" to the vendor since they would never admit fault with their product.
Others on the market operate too slow, we eliminated that as well









