904??

i have a 78 lock up which means it has an over drive in my car,so the 84 will probably be a lock up.I assume it is a 2 wheel drive if it is a factory tranny for the truck,most trucks have the 727.make sure what your getting the 727 will bolt up also and is stronger but carries more turning wieght.i like the idea of having the over drive as long as it holds up to the power.I'm no tranny expert but I assume you can get a stall for them just make sure they know what it is if you buy.