Difference in front end alignment specs.

[66FBCharger]

What is the difference in alignment specs from running bias ply tires or running radial tires?
The car is a '70 road runner with F60x15 tires and manual steering.

[HPP]

Radials will tolerate a much wider range of alignment angles before they start to wear excessively. This means you can set more aggressive specifications with them to achieve better handling. More negative camber, more positive caster, wider toe changes are all possible with radials.

If you have an F60 with manual steering, stick with the stock specs.

[Mike DC]

I think the factory's 0-degree caster setting (which would go negative once you put any rake in the car's stance) had more to do with manual steering cars than bias-plys.

Bias-plys need to be toed-in more than radials do. 

Radials also want some negative camber.  At least 1 degree.  Bias-plys would suffer more uneven wear from it than radials do.