[RSGators2001]

I did the 3.73 swap with my 5 speed auto. Makes a world of difference in seat of pants feel, gas mileage (before anyone gets on here and says you should have a bought a Toyota if your worried about mpg-I already know) and also cruise rpm's. Like everything else we do to these toys, it is expensive. Running high boost as I am now, not sure if I would do it over. Traction is a big issue, will roast tires at will and trying to get a decent start from dead still is impossible. I read something somewhere from the Ken Belle people, "do not swap gearing if your going to boost". Of course that was after I had already done so. Day late, dollar short-that's me. Just my 2 cents.

I did the same thing, 3.73 then SC, Cant stop spinning.. back to 3.06 for me. 3.73 for sale soon.

 

[RSGators2001]

You going back to the "peg-leg" 3.06 or getting a new Getrag 3.06?

I bought a new getrag and upgraded clutch pack. Sold my original one.

 

[RSGators2001]

I still have my stock peg-leg (I think) I've sold so many parts off this car I have to check and see what I do have that came off of it. Can't go back to the peg-leg so if I change out I will have to buy either new or used Getrag from someone. Dam I wished Mopar would offer something between 3.06 and 3.73. Had a 3.55 in a 4 speed '73 Road Runner, the perfect combo for me.

I almost bought Dynatrac, I think it was.. They have 3.25 or 3.23.. But 7k ish.. Maybe some day.

 

[RSGators2001]

7k for a rear gear? You got to be kidding! I'm out. Only if I win the lottery, which I never buy any lottery tickets so that ain't happening. Will just run this 3.73 and enjoy the tire smoke and buy more 93 octane!

Yep me too.. 7k is for whole setup, axles, pumpkin, gears driveshaft... I'll keep the 3.06 and throw more HP at it..

 

[RSGators2001]

7k for a rear gear? You got to be kidding! I'm out. Only if I win the lottery, which I never buy any lottery tickets so that ain't happening. Will just run this 3.73 and enjoy the tire smoke and buy more 93 octane!

Wonder how much just for pumkin?

Different spline I think .. Just looked and dynatrac comes in 3.54. Driveshaftshop has a 9" conversion but still big $$$
https://www.dynatrac.com/axle-assem...axle-assemblies/dodge-challenger-lc-lx-pro-60-irs/pro-60-irs-with-truetrac.html