I'm looking into doing a 4bt into a suburban. The sub I'm looking at has a th400 in it. I didn't catch the diff tags but I'm sure it has either 3.08 or 3.54 gears. Tire size will be in the 35" range. This puts it at 1900 rpms at 65 mph and 2200 rpms at 75 mph. This seems like a decent cruise rpm for the 4bt but do you think it will be a dog off the line or around town? MPG's are a concern but I don't want to be getting 28MPG on the highway in that configuration only to be chugging around town or on every steep grade.
I'm sure the overdrive trannies (700r4, nv4500, 4l80) can be put in but I think that would pretty much kill the old budget.
I'm sure the overdrive trannies (700r4, nv4500, 4l80) can be put in but I think that would pretty much kill the old budget.