EMS free spin hubs installed

[Motorhead]

EMS free spin hubs installed, MPG results.

I finally finished my EMS hub install on my '07. Had a few issues that apparently are relative to the 35 spline kits only. I ended up cutting the supplied stub axel shorter at the unused axial circlip grove. I removed approximately 5/16ths inch off of the stub axel. My application doesn't use any circlips to retain the stub axel in the spindle. The axel rubbed the inside of the Warn hub and when I drove it. The hub selector would turn from free wheel to lock. I also didn't use their supplied Allen head bolts to mount the spindle to the axel housing. I reused the FACTORY four bearing mounting bolts, ran them through the back and bought some 14mmX1. 50 nuts. I blue Loctited them. The allen bolts were a pain.
The guys at EMS were helpful with questions. DON'T do it unless you have access to a press to install the lug bolts.
I cut out my hub caps with a 4 1/8" hole saw and hand fit them with a rotary file on my drill press.
Here are a few pics.

YEAH... They stick out... I don't plan on doing any rock climbing.

 

[seafish]

REALLY NICE work!!!

 

[Kday]

I don't think I could get past the sticking out, but good luck!

 

[BDaugherty]

It's not just the EMS kit. My '79 K10 chevy with Dana 60 front axle had the same problem. I was using Superior chromoly 35 spliner inner and outer axles with CTM Ujoints and Warn Premium hubs. On the driver's side, the stub axle would rub the inside of the dial and cause it to lock when driving down the road. I found that by grinding 1/4" off the end of the stub shaft, it wouldn't rub. Warn also makes the same hub with a set screw in the dial. It's meant for a rear axle full float application, but would work just fine on the front to be SURE that you don't have a hub lock on you unexpectedly.

Your kit looks great. Update us in a few thousand miles and let us know how it's working.

 

[ENafziger]

Hmmm, thanks for the write up, but a little disturbing.

Did you contact them concerning the stub axle that needing cutting? Did they recognize this was a problem? What did they say about correcting it in the future?

--Eric

 

[Motorhead]

Hmmm, thanks for the write up, but a little disturbing.

Did you contact them concerning the stub axle that needing cutting? Did they recognize this was a problem? What did they say about correcting it in the future?

--Eric

As BDaughtery also quoted, It has been an issue on SOME applications. I DID talk to Erick at EMS about this and suggested that they pare down the length of the axels. The problem is that you don't know if they are going to be too long until you have the whole thing together! I think that there should be more "wiggle room" built into the axels. Now I have adequite clearance behind the hubs AND the factory axels have a decient gap between them and the main axel housing.

If I EVER do one of these kits again, I will cut the axels BEFORE I install them.

 

[Motorhead]

I ran a trip to Seattle from the central coast of Calif and here is my fuel mileage results. With the STOCK set-up, I never got better than 19. 5 to 20mpg. This MPG was running at 62 mph. Running at speed limits between Seattle, Wa and Yreka, Ca, I got 22. 3mpg. Running hard from Yreka (75mph and 2300rpm) to Kettleman city (on I-5), I got 19. 5. Truck is an '07, 5. 9, AE-G56. I was pleased!