Rorin67

I've heard that the 9 inch rear-ends are all front-loaders and that no bolts exist on the back. Is this true? Do any non-9 inchers look like this also? And what are the benefits of a 9 incher over others? Many thanks in advance!

351foxstang

yes there are others where the carrier loads from the front of the axle housing. the way to make sure that it is a 9" housing is to see if you can get a socket on all of the bolts holding the carrier to the housing. on a nine inch rear end you will need a wrench to unbolt two of the 10 bolts.

i can post a picture of what i mean if it will help you out.

67t5ponycoupe

here is a link to the FAQ from this page. http://mustangandfords.com/techartic...ff/index1.html

The short answer is Yes they all have drop out third members(front bolts). The general consensus is that an 8 inch is plenty good up to about 400 hp.

gta289

Yes most if not all 9 and 8 inch carriers were all frontal bolt-ons. I do believe that the early I6 cars with the 7.7 inch rear had rear plate removable rear ends, although someone should correct me on this. The major benefits of a 9 inch rear are more splines on the axel, more surface area on the ring and pinion gear, and all aroung a tougher gear. Many gear head will throw a 9 inch ford rear in there hot rods, even chevys, because the ford 9inch is quite possably the best and toughest rear end ever produced.
the biggest diff. between a 9 and 8 inch rear end is the 9 inch housing on the back side(the back part you see when you look at the car from behind) has a rather large notch in the left side that sticks about a inch off the housing, this was put there for clearence issues of the ring gear. And had a bump plate that was instaled on top of the housing for protection of the rear end bottoming out. I cant tell you all specifics about the internalls, but visually you get the idea. The 8 inch wont have either of the things i mentioned with the 9 inch

Rorin67

Thanks guys!

...and 351foxstang, any photos would be a great help.

Each day I learn something more about the '67 fastback recently purchased, and I'm anxious to get home to check this one out.

67t5ponycoupe

Check the link. It has a lot of photos