4.10 to 3.55 axle swap

[Carl_F350]

I'm thinking of swapping my 4.10 with a 3.55 axle. I'm wondering if that's too much for a E4OD to handle. I don't really tow anything worth mentioning although I've been known to haul 3,000 lbs of construction debris every once in a while.

Has any one ever done the swap?

 

[Nickbf2504x4]

i have a 5 speed w/ 3.55's and its awesome...i also hardly tow...but i have a 3/4 ton srw :Sly ...i would say youll be fine though so do it and your fuel bill will thank you

 

[Dalvaras]

I have 3.55 stock and usually hual 4-7000 lbs. of equipment and materials. I get about 12.5 miles to gallon loaded.

 

[Agnem]

I'd do it Carl! That 4.10 is great if you have a 9000 pound camper to pull, but I'll take the 3.54's for fuel economy, lower RPM's and longer life any day. That pop up you have is not a problem at all.

 

[Carl_F350]

Thanks guys! I'm going to pick it up this Saturday.

 

[rancherman84]

i've got 3.55's,i tow once in awhile and only thing i dont like is the 2nd to direct shift,it seems like a big jump the old girl winds out in 2nd and then drops into direct and about falls on it face.
but for normal driving it's great 18-20 mpg in the summer