This is my first big block...I'm doing a tune up and can't find the idle speed settings online or the correct timing setting. I read in a few places that 8 DBTDC is correct, but she seems to like 12. I think she has a cam, and she came with a holly intake/carb setup....can anyone offer any suggestions as far as timing and idle speed? At 12 degrees, there is no misfiring or detonation and the throttle response is good....Let me know. Thanks!