Getting A 9 Inch To Fit In A 65

Measure the pads on the 9 inch and then on your rearend you might have to relocate the pads. yoke on the 9 inch might not fit your ujoint so might need to replace that also.

Isnt that a bit wider than the stock rearend? Rewelding the spring perches is no biggie. Ive been tossing this around myself but shortening a rearend I dunno how to do

I had a professional narrow a junkyard 9" rearend from a 77 Bronco to same width as my 66 Mustang rearend, he tacked on the perches in same location, only tacked so I could check angle and finish welding them out; he put new clutches in the traclok and added a heavy duty yoke. I bought moser axles and a new driveshaft to finish it, and new large truck drums. I'd encourage you contact a local shop that narrows rearends and talk to them about what you want. The guy I used was in north central Ohio and did work on dirt track cars. I recall him saying he used less torque in my traklok since mine was a street car. Been years ago, wish I'd written down everything. I think you need a experienced pro for this job if it needs narrowed. $100 I think is about what I paid for the Bronco rearend years ago.


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I would suggest getting someone to do it that's done it before. Although its not complicated if you or the welder are not familiar with certain things when performing this you may end up doing it again to correct mistakes. For instance your spring perches will need a 5 degree rotational offset from the yoke, your diff is offset 2 inches from flange to flange, you'll have to get shorter axles or have yours shortened, you'll have to know the splines count on your axles