So I have a couple of questions for.

1. How hard is it to upgrade the Gear Ratio on your own as opposed to taking it to a shop? I'm thinking about upgrading my trucks current gear ratio from 4.10 to 4.93.

2. What are he advantages and disadvantages of deleting the cats when I go and uprade my exhuast? I've heard different things when it comes to doing that. On the one hand I have been told its a bad idea because of the O2 sensors, Apparently without Cats the computer will end up dumping even more fuel into the motor causing it to run rich. On the other hand I have been told it will increase power and gas mileage. Then i've heard that it depends on the vehicle. Is it a good move to delete cats on my truck (which is a 2001 dodge ram 1500 off road edition?)

P.S.
where I live I am not required to have cats on my truck.

 

You can go to 4.56 thats it for the 9.25 rear you have. Lots of work and some speical tools are needed to do this work. That said the 9.25 is one of the easiest diff's to change gears in other than a third member diff.

Keep the cat convertors just get a high flow cat.

 

Didn't realize I couldn't go past 4.56 ratio so that's good to know. Still worth upgrading to that. Any idea where the best place is to buy the gears?

 

Randy's Ring and Pinion is where I'm getting mine.

 

If you plan on running super big tires you could look into a Dana 60 swap. Or 70. That would let you get basically any gear ratio or locker they make.

Expect to shell out at least grand for a shop to do a gear swap.

 

I second this. IMO anyone wanting to run 37's or more, which I imagine its a size like that you want with that ratio, should make this swap. They have much bigger brakes and much better steering ,not to mention not replacing front end parts all the time.. Randy's is a good spot for gears, could check Yukon as well. Motive gears seem to be getting good reviews as well.

 

I will third this.

 

How more would it cost to do such a swap?

 

Axles are the biggest expense.... best be is to find someone parting out the whole truck, and grabbing everything you need. If you plan to pay someone else to do it for you, you are looking at WELL into 4 digits......

 

Best bet financially and parts wise is to find a wrecked truck, blown engine or whatver. A 2500. And take those axles and swap them into yours.


While you had them out you could try to swap the gears yourself. Since you could still drive your truck and take your time/get help from a pro or friend who has done it before on the gears.


I paid 1000 dollars for my parts truck near southwest VA. And about 500 bucks worth parts like tie rods, ball joints, u joints, brake calipers and stuff. I did not swap gears.