nar962

I have a 2013 3.7 V6 F-150 XLT that I purchased for work. Although it is a 2wd, I need to get around on some dirt roads and a little bit of rough terrain (nothing I would get stuck in though). Regardless, I was planning on upgrading the tires to 33" which I know will add some weight on this truck and possibly putting Rancho's Quicklift on the front to balance the nose dive.

Point being, with a small motor and 2wd I don't want to kill the fuel economy on this truck just to make it look cool and kick some dust. What do you recommend that I do in order to upgrade the ride to accommodate the tires and tool box. Etc.

Do you think it will kill the MPG on the truck adding the weight?

Anyone have similar experience with this?

Wanted33

I owned a 3.7L for two years. The Crew Cab itself is heavy enough to stress the engine's fuel economy as it is. You will loss mpg's with bigger tires, but how much will depend on the weight of course. You may be OK with just a front level kit if the terrain isn't that rough, and maybe tires of the same size with a more aggressive thread. The 3.7 is a tough little SOB, but it is sensitive to mods that increase the weight.


Welcome to the forum.

BobLobLaw

I have a supercab 4x4 3.7. I have a 1" leveling kit. Majority of the time I have 500+ lbs of tools in the bed. Not a big loss of mpg. I maybe lose 20 kms per tank. You don't need bigger tires. Get something more aggressive in the stock size and remove the front air dam for more ground clearance.

What type of roads are you driving on? I work in construction and drive the muddy and swampy job sites on a daily basis. Never had to use 4x4 and I have the stock goodyears.

Sinfulpride

I also have the 3.7 4x4 scab. I have a 2" lift and upgraded my tires to 275/70/18 grabber at2s. I suffered about 1.5 mpg hit. But once you factor in taller tires it's probably closer to only a 1 mpg hit. I'd be curious to see the difference once it was reflashed for proper tire size ad having the proper shift points. I also kept stock rims which are pretty heavy. There's lots of aftermarket rims that weigh a lot less and could also help out your mpg.

BobLobLaw

Did you notice any power loss? 270/70/18 is the size I'm thinking of getting. Any pics?

nar962

Thanks for the updates guys. I'm thinking of upgrading to some stock 18" rims with 275/65R18's for now. Maybe add the quicklift later when funds are a little more available.

Sinfulpride

A little power loss, but not insane. Not great pics but here's a few

BobLobLaw

Nice truck. I thought I was the only one with an XTR 4x4 3.7. I guess not lol.

schizbomb

My 2WD scab 3.7 truck came stock with the 275/65/18. I get 20.5mpg per tank in 60/40 city/hwy driving. I have about 200-300lbs in the bed at all times. I keep the tires at 38PSI. If they dip below 35 I can FEEL it in the acceleration and see in the MPG dropping below 24 on my morning commute.

Sinfulpride

It was a special order, dealer couldn't find any on any lots around here. I lv it but wouldn't mind getting lighter rims that pop the tires out a little. But one mod at a time lol.