Re: Running on?

["Tyson Sherman" <tsherman@tecinfo.com>]

Scott,
My 76 did the same after the engine rebuild.  I have
never determined the cause of mine, but many say
that too-lean of a mixture, too-rich of a mixture, or
over-advanced timing are causes. 
Mine does it occasionally but only when it's over 95
degs outside, but not very often.
I run 93 octane (I have higher compression pistons)
Tyson