You have a wonderful day. Best wishes. Deas Plant.
Hi, Rollercoasterider.
About the only parts that will interchange between the 3T-4T transmissions and the 47A manual transmission would be the shifter lever knobs and some of the bolts.
As I undertsand it, the 3T and 4t D7's had the same engine, give or take a couple of minor mods for military requirements on the 4T's which were the military version of the 3T. Most of the variations on the 4T's were transmission-related or electrical. Basically, you should be able to take a complete engine or pretty much any part and swap it from one to the other without a problem.
Hope this helps.
Happy Noo Yeer.
No parts interchangable and not the knob too.
HAPPY NEW YEAR
must be the new year--to much wishful thinking
and I only needed 2nd gear--fails to properly function