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Just bought a 78 Subercab. Axel code on the door says B4 something. The next mark is either an I or a 1. If it says B4I does that make sense? or does B41 look right? I would like to know what my front and rear axels are and the gear ratios. Also, can this truck be both a trailer special and camper special? It has both the emblems on the truck. Your help is much appreciated.
Axle code is probably? a B4 which is a Dana 60 Limited Slip 5300 lb axle with a 4:10 ratio. The I or 1 might actually be a J which indicates power steering.
Mil1ion actually has all this info on his webpage for deciphering truck rating plates.