Slap a half tank of turbo blue in it and a set of NGK's.
My buddy has a 383 (10.5 to 1) in his nova that likes around 99 octane. During the cruise we couldnt find and race fuel so we settled for premium and some octane boost.
350 splaied main caps, stroked to 383, AFR 195's, comp rollers, 525 lift cam
Temps were alot warmer (205 instead of 185) in traffic.
Some timing and tuning will clear it up...