Is vacuum stady through the rpm range? does if fall or rise when you accelerate under load?
With 62's You are at 9.95 to 1 std. and 10.1 .030.
It should not be pinging terribly bad at either CR. But I would increase octane and see where it gets you.
I would shoot for the Turbo Blue and set initial at 12-14 and total of 34 all in by 2500 (just a base setting) If you cant get the distributor to advance due to it being hung up or too stiff spring tension, the engine can't advance with crank/cam rotation. I would start with the middle tension spring on both counterweights.
If it still persists, fuel lines, filters and pump next.
Someone else have any suggestions?
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
