There are 3 identifying features of a 350:

Pan is basically square, with one corner nipped off.

There is a modulator with a vacuum line nipple on the passenger's side rear of the case.

There is a kickdown cable just behind the bellhousing on the passenger's side ahead of the filler tube. A TH-250 looks the same, but has no modulator- - - -the kickdown cable also serves as a throttle pressure control.

A 350C with a lockup torque converter will have a hollow input shaft with an O ring seal near the front, and an electrical connector above the shift linkage bellcrank on the driver's side.

Some late model 350's have a dual bellhousing bolt pattern that will fit both Chevy and B-O-P engines.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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