If you are still running the OEM LSD, I would suggest upgrading. As for Ram, if I had a 4wd it would be a 2500. As for a street truck, a 1500 doesn't need to carry all that extra wieght.

 

how can i tell if the bearings are bad if i open it up myself to inspect it? silver also found me some motive 456 at moes for a good price....might just go the high road....whats the + or - of 456 vs 410....i have 392 in it....

 

33" tall tires it's a coin toss. Less than 33" tires 4:10, bigger than 33" 4:56.
My tires are 30.5" and I turn 2000 rpm at 65 mph with a 4:10 gear.

 

you know me i got 33 but when i go lower and need new wheels ill prolly stay 20 but thinner side walls

 

Why? Mine are 31.25 and Im running with 4.56's, turning 2300rpm @65mph and still get 16+mpg.

 

that sounds good closer to me...and that makes me feel better if i need to replace em i just dont wanna run high rpms from a 456 gear....lets just hope this is not as bad as it could be...

 

They wont be that high, it'll put your overall gear ratio around a 3.73 or close to it. MPG's should go up in the city, hwy should be about the same or higher, mine went up on the highway as well, not by much, but it still went up. The only downside to 4.56's is your rear tires are going to hate you

 

lmao...yeah everyone round here was just scarring me away cause its a high gear and you dont wanna go that route is all i keep hearing....but i wanna def find out whats going on in there and take it from there...i just hope the factory lsd is good....still thats a high price to replace all of that....

 

Since you already have 3:92 I would lean toward 4:56 gear. Bob at Moe's steared me toward 4:10 because I'm running fairly short tire. I would not have a problem if I had gone to 4:56 gear. The numbers I previously mentioned is just a general rule of thumb. It really comes down to what the individual is comfortable with. Good luck..

 

but then you have "death wobble" issues to worry about. Not that I'm saying a SFA isn't the thing to have, but my point is ANY vehicle made by ANY company has certain problems these days as EVERY manufacturer is cutting corners wherever they can...