I have done a lot of reserch on swaping out my IFS for a dana 60 I have a 1981 F350 It has the front leaf springs and it looks like I could just unbolt everything and the 60 shold bolt right up. The question i have is what would be the best years of trucks to find the axle?

 

late 80s -91 should be king pin , after should be ball joints ! you will have to replace the negative arched springs with positive arched springs for a straight axle swap other wise the pumpkin will hit the crossmember !

 

85.5-91 are king pin and 92-97 are ball joint.

You need the axle, F350 springs, trac bar, trac bar mount and steering linkage to go w the D60 axle.

If you use the F250(TTB D50) springs it will ride TERRIBLE! they are a heavier rated spring because they have to follow an arch when then flex, while the F350 (d60 Monobeam) springs do not

 

Ok thanks guys will those years fit center pin to center pin on my truck? after i put the new spring on it

 

Yes. I would replace your front shackles as well, they dont last long

 

I have 32 inch from center pin to center pin I thought that the late 80's were a little wider than that

 

80-97 should be the same