91 octane to stop vapor lock?

Blackmamba said
In Canada, only 91 and higher octane gas contains no ethanol. So more asking about ethanol and referring to how its not suited for old engines.

It's true that ethanol does evaporate quicker, and that it boils quicker so it could add to the vapor lock problem.
Del posted about a return system and the filter/return.
If you are sure what is happening is vapor lock then that would fix it.

Running an Edelbrock carb are ya?