Quote:
Originally Posted by Henry/Kokomo
Frenchy - When you look at the Merc heads and compare them to the EAB's it'll become very obvious where the differences lie. The EAB combustion chambers are much smaller and therefore yields a higher Compression Ratio. Just a thought here . . . . .you might use your die grinder or an angle grinder to smooth up the exterior surface of the heads. Taking out the casting roughness and the cast on markings isn't difficult and you get two benefits. 1) the paint job looks better-i.e.smoother and shinier and 2) only you know for sure what type heads you have. Paint'em Merc. green and go for it. (I've just been through a debacle with milled EAB heads, Ross pistons and a decked block. Keep it as simple as you can). FWIW - Regards, Henry.
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Henry
I had the machine shop check the CC in these Mercury heads and we matched them to the Ford heads.
Frenchy