Your picture shows that cam a whole tooth off. If the crank is at zero, you should back the cam off to align the mark. Dennis
Your right, I tried it and it almost right on it. I got the timing set a 8*BTDC however the idle is still high. When I pull the vacuum advance hose idle goes down, is that hose supposed to have vacuum at idle?Agreed. Pull the belt off, set the crank to zero (it is best to pull the balancer off and align it by the inner marks), set the cam to zero and then but the belt back on. Your timing adjustment should be done by twisting the distributor.
I don't know enough about the vac advance on the 2.3 dizzy, but hopefully someone else here does.Your right, I tried it and it almost right on it. I got the timing set a 8*BTDC however the idle is still high. When I pull the vacuum advance hose idle goes down, is that hose supposed to have vacuum at idle?
The difference between ported and manifold vacuum is that ported has no vacuum at idle when the throttle blade is closed. As soon as the throttle blade is opened the ported vacuum port has manifold vacuum exposed. So the difference between connecting the vacuum advance to a ported vs manifold source is that ported will have no additional advance at idle, and a manifold source will have the additional advance at idle. The engine actually prefers more advance at idle except for hot starting, as noted by the higher RPM when given more advance at idle. The engine is more efficient with say 32 degrees of advance at idle vs 12 degrees of advance at idle. Since there is basically no vacuum when starting the vacuum advance is not added at startup.A "normal" vacuum advance for a carbureted engine shouldn't have manifold vacuum connected, rather it should be fed from a source of ported vacuum. Such that vacuum rises with engine speed.