31 vs 28 axles and a few questions

[backfocus]

I am considering changing over to 31 spline axles as I am changing axles. I currently have lincoln axles 28 spline with an auburn locker, and FMS 3:55s. The reason I am changing is bacause the current axles are to long ( thanks to the guy who last had the car). And it has a whinning noise I can't get rid of?

Besides axles what would I need to change, just the locker or is there more??? Gears???

I don't go to the track but once every other year or so, maybe at a Ford Fun Weekend. Mostly just for show and fun to drive, not a Daily Driver.

As I say this I am redoing some engine mods and look to get 400 horses on the motor, so nothing extreme. Should I upgrade?

 

[llwood]

if you don't really beat on it at all i would say no just get the quality 28 spline in the right length

 

[timewarped1972]

i believe all you need is the differential carrier and axle shafts.....gears should be the same.

someone in here last weak snapped an axle, not sure how much power they were running though

 

[Daggar]

Let's not forget about the installation kit! Bearings, shims, seals, blah blah blah. About another $80 for the rebuild kit.

 

[srothfuss]

If you are not planning on 3,000 - 5,000RPM launches at the drag strip there probably isn't too much need to upgrade to the 31 spline units.

To save yourself trouble, just get some quality 28T axles from a good vendor. The materials and processes that the aftermarket companies use result in a stronger piece than the stock style axle but still retain the correct teeth.