|T in NE said: (quoted from post at 04:30:44 03/04/14) What year is it, and do you have the 3200 RPM governor spring?|
The NV4500 swap is a little more involved than bolting the other transmission up. It takes the flywheel housing and starter from the 94-98 trucks as well.
The 6 speeds don't have any trouble with 5th and 6th gears coming apart.
If you have any questions about an old square-body truck the guys at the DTRF can answer it.
Deisel Truck Resource Forum
Correct, you need the adapter plate and starter from a 2nd gen. Not a big deal.
The 6 speeds do have issues towing in 6th gear. NV4500 does not have a problem towing in 4th at all. 5th in a 6 speed and 4th in a 5 speed are both direct drive.
REAL medium duty transmissions such as a RTO 6610 would handle towing heavy in overdrive every day of the week. But any trans that comes in a pickup truck cannot. Sure, NV4500 may have the weakest overdrive, but the others are not much stronger.
you can tow heavy so long as you dont have to apply more than stock power levels to overdrive. For example, if I have to apply more than 20psi of boost for more than 15 seconds, I downshift to 4th. This post was edited by PretendFarmer at 06:17:15 03/04/14.