The rear end I have right now is out of a 1965 Ranchero with a 289 2V. It has a 3.20 or 3.25 ratio for sure. I checked it by hand. I wanted to know the ring gear size. 7.5",8", or 8.8"? Any help would be appreciated. Thanks.
79 F150 4x4 410m Built Ford Tough!(9.1:1,KB pistons,custom Comp Cams X-Treme 210/218-.508/.524,roller rockers)/c6/3.5:1 gears,4.11:1 soon, Demon 4bbl, 285/75R16 BFG Mudders on alumn. mags with New Drk. Blue paint.
65 Ranchero 170-6, 3on the tree, solid mags, New Bright Yellow paint
If the back of the housing has a "bump" in it - to allow for clearance of the ring gear - it is a 9". If it is just smooth - it is most likely an 8" although some very early 9" units were smooth, but I believe that was in the late 50s.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.