i'm thinking mine is going to be some were in the mid of strt/strp . so e85 ron is 104 oc , not e85 ron/mon is low 85 oc (winter fuel). do you use it to drive as a everyday'r or just a great times hotrod ? here in calif gas sucks big time , and at 3 bucks a gal , i'll pump in a buck or two more to get a monster plant plant , and heat issues are all but gone . i'm also interested in your build i've got the same intake , had it from new in 1975 , from a all iron max'd out 383 build , still got that engine as well .
