desotoshane
Member
So did Chrysler ever make a sure grip for the 7.25 84-89? If not any after market out there?
I blew up 2 open ones with the stock 2 barrel 318 before swapping out for a sure grip 8 1/4.Marginally weak, I'd say it's full on weak.
And that`s what I blew up both times.7 1/4 open rears usually lose the spiders first. Going around a turn while doing a burn out usually ends it in a hurry.
Thanks for the help I was just wanting more traction not a hot rod . I have other cars for that my fifth avenues are my drivers and the weather in Kansas is unpredictable. But maybe considering a 8 1/4 does anyone have a chart on rear end measurements for the FA's, diplomats, GF's etc that will bolt in? I know the drive shaft will have to be shorter but what about the perches? I found charts showing older rear ends but not the late 70's and 80's
Not really. I had the rear in one of my race cars, with the 5.13 gears. There is not much demand for a 7/14 rear with 5.13's. I had a new 3.91 gear set, and clutch parts in stock. So decided to rebuild it "as good as new". I was able to find everything else except for the spider gear cross shafts, but mine were OK.It must be a restoration project to spend that kind of money on a 7.25 axle.