I have a 94 ford f150 4WD with (H9) 355-LS. Can I swap the front differential with one from a 95 ford f150 4WD with (19) 355-NON LS ? My first time on here . Hope I"m doing this right.

 

Yes, but what are you trying to accomplish? Neither is LS.

 

My 94 f150 door decal says its a 355 limited slip. My front differential is bad. I have a 95 front differential that is a 355 non limited slip. Just wondering it its going to be ok to have limited slip on rear and non limited slip on front when in 4wd. Thanks

 

Does that mean that the front differentials on f150 4WD are not limited slip?

 

Yes, the factory front differentials are non limited slip or "open" differentials. The purpose of differentials is to allow the two tires on the same axle to turn at different speeds during steering maneuvers. The purpose of limited slip differentials is to give the benefit of power being applied more equally to both tires on one axle, and to allow slippage in turns. But, with power applied to both tires it is much more likely that both will lose traction and on a snowy road, especially on turns or even just from the crown of the road, if both tires on one axle lose traction, that end of your truck will head for the ditch.

 

Ok. I see now how it works. Thank you very much for your help. This site is very helpful.

 

No, it means YOURS are not (like most others). There ARE some with LSDs F&R, but they're rare. Read this page & then try to fill your signature:

(click this text)

 

Ford LSDs have not been amazing in my experience. Torsens and E-lockers have eliminated the problems with open vs closed diffs, and if you're going to the trouble of replacing a differential, getting a good one in there is likely worth it.