Timing curve for my big-cam 451?

Three comments:
- if you are going to use VA to improve idle [ smart ], then you do that first. It is ALWAYS first.
- 56* at cruise for a low vac cam is not excessive. If you get surging, determine whether you are still on the T-slots or the main cct. Then richen that cct slightly. What happens with VA [ ported or man ] at cruise is that the t/blades are not open as far as they would be without VA. So engine is pulling less fuel, needs to be richened.
- you are using a lot of static init, 24*. No need to use super soft centri springs. This might be why timing does not come back to the same point each time you rev the engine, weights behaving erratically.