I want to block the heat crossover on my 360 w/ ported 915's. It's a warm weather engine.
The 1213's don't have the openings for the crossover. Will they work? Why don't they burn through?
Is their purpose to block the cross over, or was there an application with no crossover?
I don't know if they are still available, but at one time manici racing and other companies had block off plate's for blocking off the crossover. Gaskets with the opening blocked off are probably for aluminum heads.
