Quote:
Originally Posted by TimC
I belive 3.54 is as low(high) as I can go. Is anybody aware of something other than all new parts that will work in the 3/4 ton trucks? ie any crossovers I can look for in the pick a part yards?
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Are you saying that you want taller gears than 3.54? If yes, you have a few possibilities. One would be an overdrive transmission, either manual or automatic, depending on what you have now. A Gear Vendors O/D is available for the GM 4 speed manuals as well as the automatics, but an overdrive automatic would likely cost less than the GV.
Another fairly easy swap is the GM 14 bolt axle, which I believe is available down to 3.23. Lastly, in the 1960s, Mopar used a D60 in some of their high performance cars (like Hemis). I don't know if that one was available with taller gears than 3.54, but in any case it would probably be a collectors' item and priced accordingly.
Ray