3.73's or wait for 4.10's

885.0conv · Jun 22, 2009

I have the chance to buy a rebuilt rear end (whole assembly from drum to drum) for 300, the gears are 3.73. I was reading that 4.10 are the best for the AOD so I was wondering if I should wait til there is a 4.10 rear end for sale or pay the 500-600 for rebuild and parts for the one I have or go with the 3.73 that is rebuilt. Is the extra 200-300 I will spend worth it. I want to add a supercharger down the way and saw that 3.73 my be better for the supercharger. Thanks for the input.

885.0conv · Jun 28, 2009

Anyone have any ideas?

Domindart · Jun 29, 2009

I would think that w a supercharger, a 3.73 would be better. Often , in a manual, I know that 1st is soo short its often not even used!

SteedaGT9150 · Jun 30, 2009

3.73's will be fine with your auto, in fact i think thats what ford suggests. ryan has them in his vert, along with some other people, they might chime in if they see this. i have 3.73s in both my cars and love them, granted they are both manuals.

TenorPlayinGuy · Jun 30, 2009

It was a notable difference when I jumped to 3:73's in my hatch, from the stock 2:73's. Still plenty driveable, and yes first gear is pretty much useless now, but I still try to use it so I don't lug the motor. (some wierd power loss right now)

I will be going down to 3.27s as every mustang I've driven with the two different ratios, i prefer the longer gears and better freeway driving with the taller gear. To each their own. With a 331 and a S-trim, mine will have plenty of go with the combo.

It all depends on the driving. And how YOU really want your mustang to feel.

885.0conv · Jun 30, 2009

I drive 10 miles on the highway and maybe twice a week so I dont drive the car that much. I wanted to get that "pull to the back of the seat" feeling that I miss so much.

TenorPlayinGuy · Jun 30, 2009

yep it should be fine for you. Also depending on your driving style/Plans is the differential in that rear end

MadDAWG · Jun 30, 2009

Go with the 3.73s and take the money saved and put it towards a converter. The two together will really wake up that car!

JustA5.0 · Jul 1, 2009

If cost was the same I'd go with 4.10s.

But in your case, future Supercharger and I'm guessing your t-lok is smoked, don't pass on the good deal.

3.73's or wait for 4.10's

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