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Thread: Driveshaft calculations

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    Driveshaft calculations

    I get a lot of mixed information when I try to look this up online but I want to know what I can safely run an 84? long 5? diameter .125 wall aluminum driveshaft to mph wise. 3.23 rear gears and a 32? tire. When I ask for a two piece shaft most shops want to know why and they want to sell me on staying with the 1 piece which is going to sacrifice some speed. I am no expert by any means so it looks like engine rpm and trans ratios don?t mean anything when calculating this speed. It?s all based on wheel speed and rear ratio. Any help would be great.

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    tried that. they dont have the diameter or wall thickness in the drop down to get an accurate number. also does not have the proper u joint in list.