How big of a 4 barrel on a stock 1970 318?

71DodgeDemon340 said
Ive learned about holley’s notorious constant adjusting problems from many of the old timers

Do tell.. I've been running nothing but Holley and Holley type carbs ie'Quickfuel for a while once adjusted correctly they'll outperform anything out there..but you need to KNOW what your doing..keywood KNOW!!!