I just purchased a 1996 f250 4X4 460 and am very excited. I was wondering if putting manual hubs on it will help with the fuel mileage. I believe it has a Dana 50 front IFS. If the manual hubs will help with mileage does it take 19 or 30 spline hubs?

 

Neither have ANY effect on mileage unless your in 4WD or in the case of the manual ones, locked in.

 

Thanks for the reply. just curious why anyone would want to change from auto hubs to manual?

 

The auto hubs are known to fail at the most inopportune moment. Corrosion, dirt, etc. tend to prevent them from working when you need it. If you maintain a routine maintenance schedule the odds of failure are reduced. I have never had a manual hub fail me.

 

Thanks for the answer. Does a Dana 50 have 19 or 30 spline hub locks?

 

30 splines

 

exactly what rla2005 said...i was looking at a truck with only 120k on it and we drove it one day and it had the auto hubs and it shifted into 4WD and it drove perfectly. But the next day when I took my dad to see it, you could here the tcase shift in but there was no power going to the front tires. Determined it was the hubs and walked from the truck. Just never know and I didn't want to change em over is all.

 

Hmmm, letting a $100 set of hubs from getting a nicely working truck might have not been the best choice, but I would have to be there to see what I would have done. Rla and Evan already answered this one, we change our locking hubs due to reliability. You can check the link in my signature for the procedure if you want to.

 

Yes that was my thought exactly, but I wasn't the one who got to decide on if I got to buy it or not. There were a number of other things wrong that needed work as well as it would've needed new tires.