sway said:
200- 4r is for a 6 cly engine .
Nah!!! They came behind a few V-8's in their day.
Olds 350 Diesel, Olds 307, Chevy 305, Maybe even the Pontiac 301- too.
If the TH-350 was so weak, why was it put behind so many different engines in so many different cars and trucks, and for so many years.
And the 2004R lasted what, 6 years? And replaced with what? 700R4.
I've beat the snot out of quite a few TH-350's, and never had a problem with them. The black stepside in my gallery has a TH-350 that has been in 4 trucks now, and the reasons I am not driving it now, this truck has:
1. Blew an oil cooler line and spit 9 quarts of 10W30 on the road, rod bearing now has a little too much clearance.
2. A three foot jump onto pavement made a weak point in the passenger side frame rail a serious problem waiting to happen.
3. Another stunt involving too much air and a lot too much hooked to a chain while using it as a log skidder made a not-so-nice loud BOOM when the passenger side rear main leaf spring seperated halves and the rear half poked it's head out the floor of the bed.
The last truck it was in before this one had a frame that didn't like loaded as much as I asked it to be.
The truck before that one had an engine that begged to be put in my car.
The truck before that one had lasted too many miles without even basic maintenance, I rebuilt the engine in that one at 103,000, and the transmission a couple months later (this was back in 1989).
So I don't believe a TH-350 is "weak" because a couple members out of 20,000 have had a problem with it.