175 without converter
This is most likely to be GM's Turbo 400 transmission.
The weight of a 350 GM turbo transmission is about 125 pounds. However, some people claim that they can be as light as 90 pounds.
12 to 14 quarts including the converter 7quarts without
Dexron II or any other transmission fluid for GM vehicles.
That would be a HEAVY DUTY 400 Turbo
Dexron/Mercon III
Turbo hydramatic 400 long tail common to all GM senior models except Chevrolet from 1965 to
The transmission fluid capacity for a GM turbo 200 R4 transmission is 6 quarts. It should be drained and refilled at least once every two years.
Look at the pan, the Turbo 400 pan is 16 5/8-inches long and 13 inches wide - it looks like a map of the state of Texas . - The Turbo 350 pan is like a square with a corner cut off and is 13 1/2 inches long and 13 wide. Read more: How to Identify a Turbo 350 or Turbo 400 Transmission | eHow.com http://www.ehow.com/how_7423514_identify-350-turbo-400-transmission.html#ixzz2DV3H19xj
GM never made a 450 tranny, you probably mean a turbo 400 tranny and yes it can be done.
A turbo transmission is does not involve turbo in the conventional sense at all. A turbo takes exhaust gases straight off the cylinder head via a special exhaust manifold, and uses that air velocity to force air into the intake. This has a cost of having the incoming air to the engine hotter than what is ideal, but there is a trade off with any system. A turbo transmission, such as GM's turbo hydramatic, is merely a name GM assigned to the transmission. GM's Turbo Hydramatic 700R4 transmission was their first with an overdrive gear. This overdrive gear was a higher gear ration than previous transmission's 3rd gear and gave much better gas mileage on the street. So, a turbo transmission does not actually use turbo, it is just a name for a transmission with another gear for highway use. Turbo in this sense is just a name.
GM synchromesh