Sorry if this was covered before, but do your engines employ carbs with inlet filters like the Rochesters and if so are they nicely clear?
And has anyone confirmed carb float level is to spec.?
I don't recall your confirming the distributors still have points and condensers , not aftermarket modules, and if the former, whether the dwell angle was found to be in spec at 28-31* ( opt. 29.5*). ( Any points gap spec is just to help get it started, not correctly tuned, IMO).
Also , since it sounds like you have not yet temporarily plumbed in to the fuel pump a very clean portable tank of very fresh new gas, you said you filled with nice fresh gas but how much 3 yr old gas was in there when you added the fresh? New gas won't fix phase-separated gasohol if that happened to be the case.
And has anyone confirmed carb float level is to spec.?
I don't recall your confirming the distributors still have points and condensers , not aftermarket modules, and if the former, whether the dwell angle was found to be in spec at 28-31* ( opt. 29.5*). ( Any points gap spec is just to help get it started, not correctly tuned, IMO).
Also , since it sounds like you have not yet temporarily plumbed in to the fuel pump a very clean portable tank of very fresh new gas, you said you filled with nice fresh gas but how much 3 yr old gas was in there when you added the fresh? New gas won't fix phase-separated gasohol if that happened to be the case.