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rotorwrench · 04-17-2021, 02:48 PM

The EAB heads were developed at a time when the country was starting to use better fuels so Ford started deleting the hardened seats in the valve pockets of car engines for plane cast finish. This and rotator type valves started showing up in early 1951. By somewhere in 1952, only the trucks had hardened seats in the exhaust valve pockets.

The Canadian aluminum heads and ones called cheater aftermarket heads were close copies of OEM Ford heads and they show up now and then. Aluminum has more corrosion problems so finding a good set may not be worth the trouble since other acceptable aftermarket heads are available.

04-17-2021, 02:48 PM	#17
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: Are these EAB heads OK? The EAB heads were developed at a time when the country was starting to use better fuels so Ford started deleting the hardened seats in the valve pockets of car engines for plane cast finish. This and rotator type valves started showing up in early 1951. By somewhere in 1952, only the trucks had hardened seats in the exhaust valve pockets. The Canadian aluminum heads and ones called cheater aftermarket heads were close copies of OEM Ford heads and they show up now and then. Aluminum has more corrosion problems so finding a good set may not be worth the trouble since other acceptable aftermarket heads are available.