Re: Recommended ignition timing for 1972 351C-4V
Once the original cam has been changed, I have the best success timing
an engine with a vacuum gauge.
i.e. with engine at idle and vacuum advance disconnected, turn dist. to
get maximum reading on a vacuum gauge, then back it off 3" HG and try
If it pings or is hard to start, back it off a hair more at a time,
until it will start easily without binding, and there is no ping.
you now have the "knock point" for that specific engine and fuel used
ps- use premium pump gas in old V-8's, they run better.