How much would it cost to put a 700R4 in a M1028 (1987)? I am in WI
Also noticed you have 700R4's in your trucks. what do you get for fuel milage now?
final question... What tranny will you put behind the Cummins?
If I do it about $1500 to do the 700r4 swap, If you do it yourself around $800-1000.
I get about 18-20 mpg if I drive it nicely, if I do a lot of highway driving I get 16-17. Basically any thing over 55mph will hurt your fuel mileage. If I tow anything over 2500 lbs, my mileage drops to 13-14 mpg. RPM's with the turbo 400 at 55 mph are 2650, rpms with the 700r4 at 55 mph are 1850, these numbers are assuming you have the stock 32 inch tall tires.
As for the cummins I will be using the dodge "47rh" that is currently behind the cummins, and I have an NP205 from a 91 dodge that had the 727 with the A518 overdrive. The 47rh is basically the 727 with the A518, so the np205 will bolt right up to the 47rh without any adapters or modifications. Dodge just changed the designation of the trans in 94 when the body style changed.