overdrive trans

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mrolds

Not-quite-so-new-guy
Aug 27, 2015
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pine city washington 99170-8606
i have a 1980 olds cutlass calais and this may be a dumb question but is there an overdrive transmission that will fit behind an olds 350. i know of the 700 r4 and the 350 with the lockup torque converter but are they any better than a regular 350?
 
Sounds like you might want to consider a 200-4R. They feature a dual bolt pattern that will fit BOP and Chevy. The 700R-4 is basically a Chevy only bolt pattern, but can be used with an adapter plate.
I think either one would be a better choice than a TH350C with lock-up. A regular TH350 would be fine if you're not concerned about having overdrive.
 
They put 200-4R's in a variety of GM vehicles. Preferably, you'd want one from a Monte SS, Buick GN/ T-Type, Olds 442, H/O, Turbo Trans Am.

The lower performance units were in Chevy Caprice up to '89, Olds Delta 88, Cutlass, Cadillac (not sure which models), etc. The low po models can be built up and strengthened with the latest upgrades.

Do a search for 200-4R ID codes. You'll notice a small square aluminum tag riveted to the tailshaft housing on the right side of the trans. This will help you identify what model of car and year that it's out of.
For instance, the Monte SS code is CZF, Buick GN is BRF, etc. I have a 200-4R out of an '89 Caprice and the code is CTF. In the code plate, the last two digits of the year are indicated.
Here's a thread that should help you somewhat. http://www.impalas.net/forums/archive/index.php/t-3818.html
If you do a search, you'll find a lot more info out there.
 
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