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03-15-2009, 13:23

I want to service my Allison transmission but was unsure which one I had. I
have the Bluebox paperwork but it lists two different model numbers: MT 644 and
MT 654CR. The paperwork states "up to 300 hp." I was sure this 6V92 was 330 hp
with the turbo. I don't believe the motor or tranny was changed - at least I
have no reason to believe it. What's the easiest way to tell which tranny I
have? Or, does it make any difference when it comes to the filters?

Thanks.

Jerry
85 PT40
Port Hueneme, CA