View Single Post
Old 04-05-2020, 12:51 PM   #16 (permalink)
Somewhat crazed
Piotrsko's Avatar
Join Date: Sep 2013
Location: 1826 miles WSW of Normal
Posts: 1,108
Thanks: 79
Thanked 292 Times in 248 Posts
I recall 1100 fpm as a magic number, but it was related more to a structural limit, either you couldn't aspirate faster, or perhaps fatigue on the rod ends. Been 40 years too long since I was a hot rodder. You may be correct on the ignition limit as I recall there was no point going beyond a certain amount of advance.
  Reply With Quote