Hello everyone, I just purchased a 1990 Chevrolet shorty with a Detroit Diesel 8.2. I am trying to identify my rear axle ratio so i can calculate if my motor's governor has been turned down. I've crawled all under and around the back end of the bus, but the stamped ID tag has been coated with bus undercoating and is unreadable. I have copied all of the casting numbers off the rear end, but i don't know if that will help identify the axle. It has some weird bolt with a set nut sticking out of the drivers side of the chunk so i my ridiculously hopeful side It may be a 2 speed axle and its just set to the lowest ratio and the switch gear was never hooked up. I doubt it though. So... if there is anyone that thinks they can identify the axle ratio based on the casting numbers here we go...
210316e with a NF and a DI above it, this is on the third member on the drivers side front.
210339 , this is up by the input shaft, where the driveshaft hooks to the universal joint.
A210340 Not real sure where this one was
01300 Again, not sure where this one is located
and on the only readable riveted plate is stamped with nothing else readable:
PT NO 05989 (maybe)
HSG ID NO