Timing and Cam
The relevant mods
289cid + .040, 0 Deck, 10.25:1 compression, edelbrock RPM performer, MSD 6AL, Start/Retard Box and big ford billet dist. Alum heads, alum intake, Ceram-chromed full tube headers, 4 core radiator, 5-blade flex fan, over-drive march pulley on the water pump...