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yep, mine does the same exact thing, or if I am too aggressive on my down shifting it will unlock if the rpm's get too high.

thats what it was, I knew it was not the same as the fmtv, Soni priced them out and they were like 20k new for just the tranny no electronics or shifters.

Marine corp trucks, the conversion was done as a retrofit and also included an air ride cab which was ridiculous by design, when half the cab is rigid mount and the other is air, not real effective. They are an allison 7050 hd I believe, the model # is military specific and is not available for...

The allison in the 915 has a final drive ratio of 1:1 the cat is a .87:1 if memory serves, maybe .83, anyways if you swap a allison from a 915 in you will be a 50mph truck tops due to the much deeper rear end gearing. I love my Cat tranny when it loves me back, when if fights me I want to drive...