Quote:
Originally Posted by 4pipes
I wouldn't worry about the weight. After experiencing the problems of differential thermal expansion in the aluminum differential case, I'd go with the iron vs aluminum for a transmission case until they start making aluminum gears and shafts.
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I've only heard of two aluminum rear ends from Kirkham having issues, Dave (4pipes) being one of them. I have no idea about the statistics of how many have been sold and how many have had problems, but, knock on wood, mine is still fine.