Gday all, ive got a 1953 Aussie built 1100 1.5t truck he is all pretty original running gear and engine.
Im looking for options on a 5 speed box as the old 4 speed revs is [censored] out on the main roads.
Im in Australia so some parts are hard to find, but keen to hear what conversions people have done?
Ive read a few post from a while back stating the NV4500 is a great box to use? If so who has fitted one to their 235m
Pic of Randy to get ya going.. cheers
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Another option you could consider would be to source a different rear axle. A dana 80 from a '91-'02 C3500HD will be a very close fit. I think the spring perches are about the same width. They have the same lug pattern (10 on 7.5"), but the hub diameter is too large for the old wheels. If it were me, I'd source one of those axles, take the hubs and one of my old wheels to a machine shop, and have them turn down the hub to make the wheels fit over them. Then you'll have an axle that has plenty of gear ratio options all the way down into the low 3's, and you can use your stock wheels. It's also an 11,000lb axle, so you can still load it up and work with it.
