I put a timing light to my engine today (BB chevy 402)
When I first started it up it was running good and fired right up (new carb), I had a fairly smooth 700 rpm or so idle, but I shot it with the light and it said it was almost 50 degrees advanced. I wouldn't have thought that would even run.
I retarded it until it settled to somewhere between 10 and 12, but it made it run much rougher and I had to turn the idle up to more like 900.
I have a 305 advertised hydraulic cam in it, 226 @ .050 single pattern.
Is there something I don't know, or does this sound normal.
(I had the dist. vacuum advance plugged)