Anyone know the available gear ratios in a 1979 f350 with a 460 and c6?
Thanks

 

What does the axle tag say? What code #'s are on the top r/h corner of the warranty plate riveted to the door?

 

As far as I know the only two options were 3.50 and 4.10 gears. Maybe they did offer 4.56 gears in an F350?

Just jack up one tire and put the transmission in neutral. Rotate the tire one full revolution and count how many times the driveshaft rotates and then multiply by 2.

For example:

3.50 - spin the tire one revolution and the driveshaft will turn about 1.75 times
4.11 - just a wee bit past 2 full revolutions
4.56 - about 2 and 1/4 revolutions

 

Seems like auto trucks are typically 3.54 and sticks were 4.10. I may be wrong but from what I've come across that seems to be the way they came. I suppose you could order it how you wanted it.