1959 to 1965 (413/426 block casting) 413 bore is 4.1875 426 bore is 4.25
Fast Eddie · Valued Member Joined Jun 13, 2014 · 3,323 Posts #2 · 3 mo ago View full thread 1959 to 1965 (413/426 block casting) 413 bore is 4.1875 426 bore is 4.25
