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Is there an easy way to tell if the trany is a lockup unit?



yes , look at the input shaft , if the splines go to the end non lockup , it is has about .75- 1.0" of the end machined it's a lock up



I look for an o-ring on the input shaft. O-ring = lockup, no o-ring (or groove for one) non lockup.

OD transmissions die from heat fast. Make sure you have a good cooler and not the stock in radiator one with the 5/16 lines. 3/8" lines minimum IMHO.



Chrysler doesnt use o rings on input shaft.