93stang burden Member Dec 2, 2008 82 0 6 Fort Bragg, NC May 9, 2010 #1 May 9, 2010 #1 ok i have had some bad spark knock with my new 331. so today i ahve added 5 gal of 93 and 3 1/2 (@8.50 a gallon) of 108. tomarrow i plan on driving to work. has anybody ahd any experince mixing ?? should this be about a 100 octane?? any advice thanks henry
ok i have had some bad spark knock with my new 331. so today i ahve added 5 gal of 93 and 3 1/2 (@8.50 a gallon) of 108. tomarrow i plan on driving to work. has anybody ahd any experince mixing ?? should this be about a 100 octane?? any advice thanks henry
notchback Founding Member May 30, 2000 1,950 0 36 St Clair Shores MI May 9, 2010 #2 May 9, 2010 #2 you can do the math... but why not knock down timing... since it's free ?????? im just saying
93stang burden Member Dec 2, 2008 82 0 6 Fort Bragg, NC May 10, 2010 #3 May 10, 2010 #3 i' have played the timing game. been all the way down to 6* and nothing.