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Standard Axle Ratio
My car came with, according to Marti, a "9" rear end.
3.25 standard axle ratio.
Currently has a 2.75 posi, but with the new engine I am
hanker'n for a 3.25 again. Something I can use on mountain
roads. Not necessarily posi but should at least be limited slip.
Any suggestions on what to look for?


[Image: 1_11_11_13_11_50_27.png]
To me the 350 ratio is the best with a 4 speed

325's would also be good for you as it is a daily driver too.

I'll see what I have, but I think I have either one in limited slip

I agree with Don. I have a 3.25 trac-loc behind my 4-speed M-code and think it is perfect. I've also driven my buddies 4-qpeed Q-code 3.50 t-loc rear. I didn't notice that much difference. Both felt like the perfect rear ratio.

In my car with stock size 235/70r15 tires I'm at 3000 rpm at 70 mph.

Don, did you see my PM about ps & ac parts?

[Image: 386_07_10_13_5_58_42.jpeg]
My Mustangs:
71 M-code Mach 1, Medium Blue/White Sport, 4R70W, 3L50, Factory Ram Air.
72 Q-code Mach 1, Pewter/Black Sport, 4-spd, 3L25.
73 F-code Convertible, Planned: color TBD/Black top/White Int., 351C, 5-spd, 3L50.
65 Convertible, Britney Blue/White/White, more modified than original.
05 Convertible, Legend Lime/Tan/Tan, future classic??
Will start a new thread about posi vs limited slip vs trac-lock vs Detroit locker.


[Image: 1_11_11_13_11_50_27.png]
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