Iv looked through a ton of threads and iv still not got the answer i need. im runnin a 6inch lift with 37's and im wanting to regear but i havent got an answer of which gear i need to run? I do tow a gooseneck trailer with a jeep on it but thats about the extent of my towing, any help guys

 

If you like mileage then go with 4.30's... If you like RPM's then go with the 4.56's...

I would run 4.30's up to about a 40" tire, then maybe step up to a 4.56...

 

So the 4:30s will be low enough to tow but wont kill the gas milage. I read several threads bout the 4:56s running 2150rpms at 70mph, whats rpm range am i looking at with the 4:30s at about that same speed

 

well if you have a powerstroke your gas mileage will be great as far as diesel goes it might be alright

 

damn i cant believe i said that, but yeah i meant fuel mileage as in diesel

 

I have two buddies running an 05 and an 06 crewcab respectively, both on 5-6" lifts, running 37's, on stock gearing. They have towed quite a few things even with the stock 3.73's without issue. I'd stay with 4:10's or 4:30's personally.