We've built a great reputation for our racing 700/4L60E's on this board in the past few years.
We get asked many times...Do you build TH350's and TH400's? Yes, we do...For about 16 years now. The 350 and 400 are great transmission, and most definitely have their place in RACE 4th gen applications. The main reason we have steered customers away from them is just simply because most don't need them for their application. A PROPERLY built 700/4L60E will take you deep in the 10's (possibly high 9's).
Eventhough we build 700/4L60E's STRONG enough, we still see alot of requests for transbrake units. So far, there's no PROVEN transbrakes for the overdrives.
We have TH350's is 8 second cars, so this is nothing new to us, but now we're looking into offering a "direct bolt in transbrake TH350", or "direct bolt in manual valvebody TH350". These transmission still use your original A4 length driveshaft, crossmember, torque arm mount, transmission mount location, and electronic speedometer, if you desire.
They are built with the same proven parts we've used for years...Raybestos "Blue Plate" 2nd and 3rd frictions with Kolene coated steels, hardened Intermediate sprag race, heavy duty low/reverse sprag, 1 piece ring gears, etc. We use Turbo Action manual valve bodies and Hipster transbrake valvebodies. Maual valve bodies are available in standard and reverse pattern.
The direct bolt in prices are $1100 for a manual vb TH350 and $1300 for a transbrake TH350 (based on customer supplied core).

Thanks,
Frank
CPT

 

I don't have a TH350 for a core, so how much would it be without a core?
How much is a good working 4L60E core worth?