Mild 318 misses at 3000rpm

AJ/FormS said
If hooking up the Vcan changed your timing then your T-port sync. is off; Your throttle is too far open. Start by plumbing in your PCV. The PCV acts as an IdleAirBypass for our warmed up engines.

Reallynicelooking car.

OR he might simply have it plugged into a manifold vacuum outlet, when it needs to be on ported.