[Dick Boneske]

Originally Posted by Kenth

Dick, it should read:
"I also use the vented gaskets in all but 1959-66 Pontiac end carbs..
The latest factory info calls for the closed 7015345 gasket to these."

The Delco/Rochester bulletins dated may 1967 and later have the #7015345 gasket for 1959-66 Pontiac Tri-Power end carbs, and since they work, why not?

The reason for the vented gaskets does not vary from center carb to end carbs or the year of the Tri-Power.

Yes, the closed base gaskets will work OK on end carbs for all years, but the vented gaskets, which are included in all kits also work. I see no downside of using the vented gaskets. It is true, however that the holes added to the throttle plates in the end carbs do create enough air flow to keep the throat of the carbs free of vapors unless there is excessive fuel leakage.