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40 Deluxe · 09-04-2018, 04:21 PM

Original heads have "EAC" cast near the center. If you have "EAB" heads, all the better. They give more compression and were a common swap back in the day.

09-04-2018, 04:21 PM	#2
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,779	Re: mercury engine Original heads have "EAC" cast near the center. If you have "EAB" heads, all the better. They give more compression and were a common swap back in the day.