fx4 fr3ak

I know there are alot of threads out there but i like fresh opinions. My current set up is a 2013 fx4 5.0 V8 with 3.73 gears currently running a 6inch BDS lift with 35 nittotrailgrapplers and flowmaster exhaust I also have an SCT tuner with custom tunes from VMP. If I size up to 37s will I notice a terrible lost in power?..

SteveLord

I think you will for sure. Spend the money on re gearing first.

winchested

Don't think it's much different than guys running 35's on 3.31 gears and lots are doing just fine.

fishbones182

You can go to 37s but you'll be pushing the transmission and rear end. Will it work yes. But you should regear to 4.56 in both front and rear diffs. With the regear your truck will run like it is stock.

fx4 fr3ak

Ya that's what I figured just wanted to hear it :p

fishbones182

What suspension are you running? I'm running a zone with 35s on -18 offset and they rub at full lock when the suspension flexs. I want to add 2 inches to the lift and go with 37s when my tires wear down. But I'm going to regear with 4.88 in front and rear.

RES4CUE

As mentioned, here's calculators to calculate what gearing you need for size of tire to get back to stock RPM range.


://www.ringpinion.com/Calculators/Calculators.aspx

fx4 fr3ak

But I don't really care about "stock: I just want someone who's running 37s on 3.73 and there opinion on how the truck goes.

fx4 fr3ak

Running a 6inch BDS my rims are only zero offset and I never run. But ya further your offset more your going to rub but at least you got stance!!

RES4CUE

Hang in, it's not letting me paste link.