Performabuilt or Extreme Automatics?
If I ever need a 4l60 built he is the first I would contact. He knows his stuff when it comes to transmissions. I wonder if all the posters here who dismissed him have ever even heard of him.
That's what I've heard about Lonnie's customer service.
I also know he wouldn't put a .3xx boost valve in a "500 HP" transmission.
I am not on either company's payroll. I run my own performance transmission shop, it's not in my interest to "recommend" either company.
Let's just say I have seen some stuff that would definitely make me lean towards Extreme Automatics.
Personal experience you might want to call it, not from a customer's perspective but from a transmission builder's perspective.
I didn't "talk ****" about any company. I could easily do so but I didn't, I merely suggested who "I" would personally go to if I had to choose of the two choices.
"I" would just build my own, so the choices are not valid for me.
I am familiar with Extreme Automatics because I talk to Lonnie occasionally and buy Griner VB's for my high end TH400's. I believe he used to build for one of the sponsors here, and IIRC he isn't really in the 4L60E market anyway, so he may not even want the referral.
They do TH400's for very fast cars and 200-4Rs as their primary business the last time we spoke.
The Best V8 Stories One Small Block at Time
I'm going to ask one more time about wether or not the performabuilt has the sonnax valves, and if the quality of the converter is equivalent to vig's or yanks.
thanx
The OP asked about TWO vendors, I simply answered who I would use of those two.
I know that Extreme Automatics used to sub contract for a site sponsor as their builder on the 4L60Es.
I also know that Extreme Automatics is partenered up with Griner Engineering.
With your obvious wealth of knowledge about the performance transmission industry
maybe you are aware of who Steve Griner is. Originally partnered with Art Coan and the inventor of the original transbrake concept.I know that they don't sell 4L60Es as their primary business but I'm confident they can fulfill the OP's needs. Like myself, they aren't concentrating on the 300-500 HP market, they are primarily building for the 800+ HP market. When you are doing this, a 4l60E for a 400 HP car is child's play.
If the question was wide open, I would also suggest FLT, not because they are a board sponsor but because of their reputation in the industry.
I don't attain my knowledge from reading forums, I get to see the inside of some of these other companies units on my bench, and then I can make a judgement as to who's actually doing good work or not.
The OP asked about TWO vendors, I simply answered who I would use of those two.
I know that Extreme Automatics used to sub contract for a site sponsor as their builder on the 4L60Es.
I also know that Extreme Automatics is partenered up with Griner Engineering.
With your obvious wealth of knowledge about the performance transmission industry
maybe you are aware of who Steve Griner is. Originally partnered with Art Coan and the inventor of the original transbrake concept.I know that they don't sell 4L60Es as their primary business but I'm confident they can fulfill the OP's needs. Like myself, they aren't concentrating on the 300-500 HP market, they are primarily building for the 800+ HP market. When you are doing this, a 4l60E for a 400 HP car is child's play.
If the question was wide open, I would also suggest FLT, not because they are a board sponsor but because of their reputation in the industry.
I don't attain my knowledge from reading forums, I get to see the inside of some of these other companies units on my bench, and then I can make a judgement as to who's actually doing good work or not.
Thanks Joe. Hows your car doing?
I don't do any business with FLT, and don't correspond with them on any regular basis. I've traded some PM's with Vince on this and other forums infrequently, so we're not "friends" yet I would still recommend them and have referred potential customers to them who have called my shop.
It has nothing to do with who I'm friends with. I'm not "friends" with Extreme automatics either. I buy some parts from them. I also buy parts from Coan, TCI, TCS, CKPerformance, Kilgore, and other vendors but that doesn't mean I recommend them for specific builds.
You've got a lot of homework to do.
You have to quote everything I post even though it's ignorant.
You have a tough time acting professional. Unlike every shop mentioned on this board. If I need a 4L80E built I'm not going with you simply because you act like an *******. Do your homework, thats not a good business practice.
I run my business the way I want and have learned what works.
My customers appreciate the straightforward answers they get and no BS tactics to make a sale, it works for me and my customers. When you are in business for yourself, you might have a clue.
No worry here about selling you a 4L80E, I wouldn't want you as a customer.
It works both ways, as a business owner I can select my customers as well as the customer's can select a builder. I'm not hurting for business.








