thump

ah.. didn't catch that.

Nope.. the Auburns and Truetracs are butter smooth on-road. The only time you'll notice it under normal driving is if you accelerate through a slick corner (e.g. gravel road) you have a better chance of kicking out the rear if you spin both tires.

If you hang around on here you'll see people post up regularly about their truck shuddering during low speed turning. 99% of the time it's due to running low on friction modifier or their LS clutch packs are wearing out; so if you run it intentionally low on modifier then I expect you'll get the same result.

I'm pretty sure it was a factory add-on.

The super shizzle of offroad traction is full selectable locker in front and rear. ARB, eLocker, etc... but some folks don't get that it takes some experience to effectively drive full lockers (esp on front) and that you can actually end up with a higher chance of snapping an axle in many rock crawling situations (esp on front with larger tires).

I think a few guys on here gone with an aftermarket LS front and rear. My only fear of having one on front would be that we get a lot of icy roads and I'd worry about breaking the front free.

thump

Probably, but it will likely cost you as much for clutch packs, springs and labor as just switching out to an aftermarket LS with a superior design.

okbowhunter

any recomendations for a good aftermarket ls that is under a grand or even 600? labor is not a problem as i do all work myself on all my vehicals. i want something that will give me the traction i need when off road but not effect my daily driving as that is what i use it for the most.

thump

Assuming you have a 9.75 rear axle:
http://www.4wheelparts.com/Drivetrai..._pn=EAT913A477

okbowhunter

would you recommend anything for the front diff or would just upgrading the rear be enough for most situations ?

thump

I personally haven't needed more than rear. I offroad through some decent stuff but don't get crazy. An F150 is too big of a vehicle for most the hardcore 4x4 runs in Colorado.

fivespeedsteed

you can run a locker or a ls in the front but if you stress it it will mess up cv axles, or iwe's.

so for 600 ish bucks the eaton true track is a definate improvement over stock?

and for more money a selectable locker is head honcho?

thump

yes and yes.

you should be able to pick up the truetrac cheaper than 600 with a little shopping. I bought mine at the same time I regeared and got it for $460.

mitch686

What about the e locker in the fx4? I would assume the diff is the same size from 04-08. could that be put in instead of the ls?

thump

Not sure.. if the sizes line up you'd also have to see if it's tied into the ECM.