does anyone regret regearing to 4.56? i've got my truck to get em swapd out on wednsday......just getting jittery...i'm running 36x13.50R20's.......did u get that much of a performance gain out of them????

 

you'll def be glad you did. What do you have now?
I have 3.92 with the 275 60 20 and would def get a 4.56 with any 36+

 

i have a v6...i'm so glad i got them. when i went to track, i apparently had a pretty good 1/8 mile...but a crappy 1/4 mile cause my v6 couldn't get them big gears spinning quick enough. it made a world of difference in my 0-60 life...and that's all i'm about here in the city

 

I had 37-14.00-18 inch M/T on my old for F-250 SD it had 3.73 gears in it I went with 456 butI wished I went with 488.
456 are great gears but turnning those big meats steals power heavy tires heavy rims lot of mass to get rolling.

And trying to stop that Truck thats a whole story in it self.

Ask the place who doing it whatgears would they do if they owned thetruck.

Do you tow with the truck do you off road the truck You want low gears.
Sure you be turnning some more RPM's up on the HWY but you sure like it off the line and towing MPG is not that much diffrence either, you still be sucking down the gas.

 

I have 295/50/20's that are only 30" tall and don't regret 4.56's at all. You should have no regrets going with an even larger tire.

 

if only i could affoard them i would be getting them too.. just no cash right about now!

 

My only regret about 4.56's is not doing them sooner.

As for asking the shop who is installing them for their opinion... Dont bother... in most cases they will tell you 4.56's are too much. Very few shops actually know how to do the simple math needed to figure out overall gear ratios and they base their experieince off stories of others... I have been told more then a few times that 4.56's are a bad choice for our trucks... even after giving them a ride in my truck with 4.56's they refused to believe it had 4.56's even installed because in there opinion the RPMs where too low. So even after showing them the light they where too ignorant to see it and continued to say my RPMs would have gone up 1500+ at 60MPH if I had 4.56's. I asked them to show me the math on paper and they said they did not need to because they already knew the answer... I showed one shop the math formula and they where skeptical but eventually accepted it and thanked me. They now do the math and recommend steeper gears then they have in the past depending on the tire hight/trans ratios not just based on grandpa's experience in 1966.

Ask only those who have them installed... take there opinions as actual experience with the product your looking at and the vehicle you drive.

More then a hand full of 3rd Gen Ram owners have paved the way... I know I love the gears and do not regret them one bit.

If you have not already done the math try it... its easy.

__________________________________________________ ______________________________
Find your overall gear ratio:
Transmission Ratio x Rear Gear Ratio = OVERALL GEAR RATIO (OGR)

__________________________________________________ ________________________________
Find your RPMs using the overall gear ratio:
SPEED x OGR x 336 /Tire Hight = RPMs

__________________________________________________ ________________________________

In my opinion for best overall performance you should aim to have 2200RPMs@60MPH. Anywhere between 2000-2200 RPMs is the sweet spot. If you have to chose between 1900@60 and 2100@60 go with the 2100 side.

SPEED SAFE, AIR RAM

 

I love them too

 

I'm with Air Ram and the others, the only regret I've got it not having done it sooner. I've often told several of my friends that as time goes on I will likely always seek to have 4.56's from the get go...if that is something I have to order or if the truck goes straight to a shop on delivery.

A big heavy truck, with bigger tires, it's really a no brainer.....I would just give a strong caution to make sure you get 'em done by a reputable shop that does that as a primary competency, not "ya, we can do gears".....having a gear expert do the work can make a world of difference!

 

i debated going with a 4.56 but will probably cut short to a 4.10. Being im going from 3.55 to a 4.10 should be a big jump, i also plan to lift the front and keep tires to either 265's to 285's, nothing bigger(on 17's). So good luck m8. I do hear good things on the 4.56 so you should probably be happy.