I am glad people are realizing....there is no'good pump gas fuel' and I will
agree 10/1s are stretching it as far as detonation..I had a sbc 350/4 bolt main
with 300 heads,had a crower 480 lift cam,great to drive and 89 octane to boot
on 9.8/1 compression!You are asking for trouble with true 11/1 compression..
engine maker try to get you to buy these'trouble makers'but you have to mix fuel
etc etc etc...to get octane up..nothing like a ping motor or laboring motor
that you can not fix 'even with timing addjustments' people need to live in the
'now' unless you l;ike headaches..GFD.....