Axle Code 3L 15 6.7?

Powerstroke Man 6.4 · Jul 21, 2015

Got a buddy has a 15 F-250 with axle code 3L on the VIN sticker.

Newest info on axle code 3L I could find was 3.73 LS is it possible to have 3.73 from factory for SRW?

I thought the only option was 3.55 or 3.31 for 6.7's?

TIA

dsmracing1 · Jul 21, 2015

Man that would be sweet if it was 3.73's now! I get sick of my truck rolling coal and gearing down for every little hill going 65mph when towing my 12K trailer and 3.55's....

Powerstroke Man 6.4 · Jul 21, 2015

dsmracing1 said:
Man that would be sweet if it was 3.73's now! I get sick of my truck rolling coal and gearing down for every little hill going 65mph when towing my 12K trailer and 3.55's....

What's funny is that thing is bone stock and it the bottom end power is really strong no turbo lag at all.. I'm wondering if it really has 3.73's.. because if it really does that truck is special LOL.

dsmracing1 · Jul 21, 2015

Powerstroke Man 6.4 said:
What's funny is that thing is bone stock and it the bottom end power is really strong no turbo lag at all.. I'm wondering if it really has 3.73's.. because if it really does that truck is special LOL.

Haha, that truck's special and I'm jealous!

Fox · Jul 21, 2015

Check the tag on the pan, a 3L31 would be a 3.31 LSD and so on. So if he has 3.73's it will say 3L73 near the bottom corner of the tag towards the bolt.

HeavyAssault · Jul 21, 2015

Gas truck.....sure. Diesel.....don't think so.

gfulton · Jul 21, 2015

Maybe on the XLs.......

Powerstroke Man 6.4 · Jul 21, 2015

gfulton said:
Maybe on the XLs.......

Its a platinum.

Powerstroke Man 6.4 · Jul 21, 2015

Fox said:
Check the tag on the pan, a 3L31 would be a 3.31 LSD and so on. So if he has 3.73's it will say 3L73 near the bottom corner of the tag towards the bolt.

When I see him will be sure to check the tag on the axle the VIN sticker could be misprinted.