Originally Posted By dogdays
The 700R4 was based on the Turbo Hydro 350.

The TH2004R was based on a different transmission, all the information is available online in several places.

Neither was based on the Turbo Hydro 400. The 4L80E, 4L85E, 6L80 and 6L90 were based on theTH400. I'm not sure about the 8L90.

R.


TY for updating my incorrect info....