Yeah, the nv4500 is way more trans than I need for a 2wd truck. I have the nv3550 in my jeep and it is a nice shifting transmission with good ratios, 145,000 trouble free miles so far. This is off topic but applies to what we are talking about. My buddy has a 77 f250 with a 400 ford and a 4 speed. It has 4.10 gears and 31" tall tires. We built the 400 with 9.5:1 compression, bigger cam, cam timing slightly advanced, msd ignition, dual 2 1/4 exhaust with fenderwell headers, edelbrock intake, edelbrock 600cfm carb, and scorpion 1.5 ratio roller rockers. He says it gets 13-14 miles per gallon which isn't bad for a 3/4 ton 4wd truck from the 70s. Stock those trucks were lucky to pull 10mpg. He could probably squeeze a little more economy by driving it nice, but it's always in the 4 barrels and will smoke the tires in 3rd gear easily. Just shows that building an engine that makes some power running on the edge of detonation will get you decent economy and be fun as hell to drive. The truck will hit the 5300 rev limiter in 4th gear with no problem, the engine seems to run pretty good.