OD auto suggestions for a 67 Chevelle.

[Motobrewmaster]

Hello All,

I am helping a friend with a 67 Chevelle. He would like to swap in an OD auto for drivability reasons. It is a beautiful mostly original numbers 396/375HP convertible with a TH350 currently and a 3.55 12 bolt. He has a slightly warmer cam in it and he estimates the engine torque to be about 450-500 ft-lbs MAX.

He really enjoys the car, however due to the gear ratio it is not very happy on the highway. This means he and his wife don't drive it if they need to go for much more than a very local cruise.

He is interested in swapping out the TH350 but due to the condition and authenticity of the car does not want to do any permanent mod's. In other words if an OD trans will fit in the unmodified tunnel and the shifter will work in the original console he'd be happy. He also understands that he would most likely require a new drive shaft.

This all was started by him riding in my Camaro and loving the 6 speed I put in it. 4.10's and still much more cruisable than his car on the highway.

Any suggestions on transmissions and vendors is very helpful. We live in New England so in the North East would be great but not required.