Rear leaf sping bolt - size?

[Maymyvetteliveforever]

Please delete

Repeat thread

 

[J. Abbott]

It is a 9/16x12 thread. You did not say what spring you had and that will determine the length. Also look at your cover, it was common to replace these with the new cover that uses 1/2 bolts, the new cover started in 78.
Justin