Maybe I should of qualified my comments. They were absolutely awful when coupled to V8s. May of not been so bad with small engines in the S10 class. The 82s to 84s need many updates. The 700R4 was built onto the TH350 platform, and the first 350s also had a high failure rate. Later, they were great.
The two local Chevy dealers near me refused to sell any 700R4 truck if it was doing to tow a trailer from 1982 to 1984. They swapped in TH400s for that. It's also why the "mechanical modulator" kits were invented for the TH400s. Kit was made for converting 700R4 trucks to TH400. The kit was made so a TH400 could be hooked to the TV cable for the OEM 700R4. I've got two 83 plow trucks with that setup.
I thank the early 700R4s for all the dead and abandoned diesel trucks I bought cheap with low miles in the early 80s. They were dropping dead all over and the trans-shops did not have a good fix - except to swap in a TH350 or TH400. And, many did.
Bad 700R4 transmissions along with bad injection pumps led to many GM diesel truck taken off the road with very low miles on them. I bought many, dirt cheap. By 1985, the transmissions and the injection pump problems were fixed.
And, they still turn up. A few months ago I bought an 84 diesel Blazer with 45K original miles on it. The trans blew. They got it fixed and then the injection pump died. They stuck it in their barn and there it sat for many years. Old guy died, and I just bought it for $250. Got it running and trans-oil came pouring out of the front of the "rebuilt" trans.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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