The Chevy 12-bolt axle shaft (left) is tapered; the Ford 9-inch shaft is the same diameter throughout its length, except for the short section just after the spline end. This makes it easy to narrow ...
When the Ford 9-inch axle originally appeared in 1957 under the Fairlane and F-100 pickup truck, no one knew what an enduring legacy it would have. To put that in perspective, the top-of-the-line ...