350 timing how much

[Billla]

The engine doesn't require heavy load for testing either mechanical or vacuum advance. Mechanical advance is strictly RPM, and the load for vacuum advance can be just cruise If you're not sure about what detonation sounds like, get someone to ride along...detonation will *destroy* an engine in short order.

I'm not sure the timing is coming in too early - it just seems a bit aggressive. I'll see if I can get to a mock-up today on the vacuum advance; I'll be out working with pmski_1 on his overhaul and my Impala SS suspension rebuild today.

As noted previously, the Edelbrock typically (not always) requires 1 spring lighter than stock calibration - refer back in the post for links, etc.