Originally Posted by cowlitzcoach
I think you will find that you have the 6.0L gas V-8 under the hood if it isn't the 5.3L.
As far as I know GM never offered the big block gas V-8 in any of the G-series chassis.
Your bus looks like it once belonged to the tour operator Buffalo Bus in West Yellowstone, MT. They offer day trips all year long. In the spring through the fall the buses are on tires. But once the snow is on the ground they mount the buses on tracks and do abbreviated tours to Old Faithful.
Lodges and Motels in West Yellowstone | Yellowstone Vacations
I'm impressed! I bought the bus from a guide outfit in Sequoia who bought it from Buffalo Tour guides in Yellowstone a little over a year ago. TRACKS! I'd love to see that. And I think that probably explains the lift and the low gearing (and of course the 4x4).
Per the above link, the 3500 was available w/the 8.1L though it also claims the transmission is 4spd w/OD (which I would interpret to be 5 total speeds). My shift column only has D,3,2,1 and it sounds redlined at 70 mph. Anyways now I gotta go look and see what I have. I have a date w/my mechanic tomorrow at 10 to go through the whole thing and talk "options."