Quote:
Originally Posted by Mark Yacavone
Joe, Did they make a 3 speed diesel case?
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Yes they did. GM cars, including Cadillac that were powered with the Olds 260 and 350 Diesel engines, depending on the year, had either the THM-200, THM-200C or THM-200-4R transmission. All the cases were BOP and beefier.
However, the first year the engine was introduced, 1978, the transmission was a T-250.
I learned about it from a former colleague of mine, that was a drivetrain/transmission engineer at GM. On the side, he rebuilt transmissions at home. He heard me talking on the phone with another racer about the T-200 trans and he asked me if I needed a stock transmission. Also gave me a dissertation of all the GM transmissions and told me he had a BOP T-200C and he rebuilt and didn't have a use for it.
He shared the transmission had a beefier case for the diesel application. When I picked it up, he was not kidding. The bellhousing and case were beefier and did not look like the case of a T-200 I had purchased from TurboAction.