Bigchief I don't think the OP knows enough about this stuff to stray from the factory settings. He hasn't even timed it yet. High compression engines with big cams normally use manifold vacuum to advance the timing at idle to smooth out the idle. When the throttle is opened the vacuum drops and the timing advance goes away. That prevents detonation. Low compression engines like ported advance because the timing increases with throttle opening and rpm. The low compression and mild cam can tolerate that type of timing advance. Everyone has his own ideas of what works best for their particular engine but for a first timer I would stick to the factory arrangements until they learn more.
