I think they told you to use 14 deg because they assume you are using stock GM HEI. There is no adjustable stop. The 14 deg static plus stock HEI stop of 21 deg is 35 deg total. The stock HEI would require 17 deg of static to hit 38 deg of total.
You could also try the 25 deg silver stop and 13 deg of static for 38 deg total. This would be in the parameters of the carb manufacturers suggestion.
Do not use the blue stop or you will be back in stock GM HEI territory. Use the red or silver.
Too much time causes engine to run hotter. That's why I prefer 10 deg of static time. My car runs hot.
Detonation is a rattling noise, also known as ping. Sounds like your timing chain is rattling. Mostly noticeable going uphill. Very hard on the engine.
Last edited by bracketeer; 02-10-2005 at 12:58 PM.