rrgreen33

just put on a 2.5 level in the front and added a 1.5 blocks in the back also put on 35 pro comp mt on xd series wheels. The question is should i change my gears or will it be alright? also what programer do i get?

conman365

It would help to know the original gears....... :O

shotgun

It would also be nice to know what you're trying to accomplish with the new gears.

IMHO the Gryphon with custom tunes from PHP is the best tuner/programmer.

wxmcpo

I m going to assume since you only added a leveling kit and was able to fit 35's you have a 4WD. With a 4WD and 35's you DON'T have to change out gears, but my suggestion would be to add 4.56's (I had Yukon's in my old truck). As for programmer I would suggest an SCT tuner from Troyer Performance, he specializes in tuning F150's.

Larryw1

You will get many different opinions.

On my truck I have 35" toyo's -- had 3:73 gears for the first 16,000 miles. Not bad "but" I wanted to increase my power a little more. I thought my towing would benefit from a lower gear - seeing as how I wanted to run 35" tires on my truck.

My Programmer a Sct x3 helped me out nicely (I had a CAI and Cat back 3" exhaust) It works best with the CAI AND Exhaust combination.
The SCT X3 also has custom tunes.

I was surprised when I had the gears put in my 4x4. at 70 mph my rpm is 2200. this is with the cruise set at 70. I expected the gear ratio to make my truck work harder on the freeway. 2200 rpm at 70 mph seems perfect to me!

So, I am happy.

Did I need them? after all I had 3:73 gears stock. Not really! I could have gotten by with 3:73 gears.