H2 Manual Transmission Swap

[rao]

I am pretty sure this is the first one anywhere

Supercharged Hummer H2 with every conceivable suspension and other upgrade now has a NV4500 manual transmission and a manual transfer case, all from a 3/4 ton Silverado.

Now it is no longer full time AWD, but can be switched into rear wheel drive for very impressive smoky burnouts (which it does quite well) and almost 50% better gas mileage than the race-built 4L65E auto transmission. It was done because the truck had gone through three 4L65E's and kept breaking tail shafts and the owner wanted a real transmission



Note smoke from the back tires only and how the truck is starts to rotate and then straightens out







and yes that is how clean the truck is after we worked on it.

The NV4500 and NP263 went in without a hitch. The only real trouble we had was the clutch pedal. The dash on the H2 must be different from the Silverado and the clutch pedal bracing wanted to go where the Body Control Unit was. Not to hard to fix, but it took a while.