truck ?

[Bronconrocks]

does anyone know of a coil spring, that will lift about 4.5" and flex decent.on a 77 f-150 ?

[broncomania]

try some 5" coils from cage off road or 4" superflex from bronco graveyard.

[bucketobolts]

You will probably need to modify your radius arms to get the full potential out of the springs. You could wrist the radius arm, lengthen them, or buy a new set of Cage arms with your new Cage coils:notworthy:.

[Bronconrocks]

Thanks Mike, super flex will do the job.