Ok so I have an 03 dodge ram 1500 5.7 hemi 4x4 with pacesetter longtube headers and a magnaflow exhaust and a cold air intake with 33x12.50x18 tires I'm looking at getting my gears changed out but not sure where to start. I go mudding a lot and some rock crawling plus I also drive highway but not much a year. So I guess my question is what would be the recommend gears to put on my truck to get better performance out of it? Thanks and to explain further I'm no master mechanic just a weekend warrior who's trying to get all he can out of his truck.

 

What gears are in it now?

 

Not sure without opening it up I'm assuming it's still stock I haven't replaced them but after putting all this on I don't feel the same power it had as before.

 

Go here, feed it your VIN, and it will tell you everything the truck came with from the factory. Including gear ratios.

 

Ok so I did my build sheet and found out I have 3.92 axle ratio so what would be the recommend upgrade to get better than stock. I do mudding and have a leveling kit on my truck with 18inch rims and 33inch tires plus I plan on putting aftermarket steel bumpers plus I have pacesetter headers and flow master exhaust and a 87mm throttle body with cold air intake just incase those things matter.

 

Well 4.10 would get you there but if you want more low end grunt I would go with 4.56s. You will lose top speed and fuel economy just to let you know. I have basically the same mods as you except 17 in rims and 40in tires. I am running 5.36s

 

So 4.10s would probably be the way to go as I don't want to lose my top end power or get crapier gas milages than I already have. Thanks for the advice.

 

No problem!

 

3.92 to 4.10 not worth the money!!!!.... 4.56 all the way... or leave it alone. There have been tons and tons and tons and tons of posts on this over the years!
Good luck on your decision

 

I gotta agree with this sentiment. Considering its in the neighborhood of 1600 bucks to change both gear sets (if you pay a shop to do it) the minor difference in ratio is most certainly NOT worth the money. I have 4.56 gears, and 33" tires, and while I don't need the right tires on there to be able to push the house off the foundation, towing with that combo is a drag. At 55 mph, I am pushing 2800 RPM, and gas mileage drops like a stone. (no towing in O/D) I am going to bump to 35" tires, and likely get better gas mileage...... Of course, that means I will have to buy yet another drop hitch..... as the current one won't be down far enough. Again.