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Dick M · 10-27-2021, 05:46 PM

Ford did have a plant in Richmond, CA. I believe it closed in the 1950's. Ford did rebuild Model A engines in Richmond. Ford would grind off the original serial number and replace it with the "RF" number after the rebuild. "RF" indicated the Richmond Ford Plant.

The "RF" block I saw had hardened valve seats.

10-27-2021, 05:46 PM	#3
Dick M Senior Member Join Date: May 2010 Location: Ukiah, CA Posts: 477	Re: Model A Ford engine serial #RF5411 Ford did have a plant in Richmond, CA. I believe it closed in the 1950's. Ford did rebuild Model A engines in Richmond. Ford would grind off the original serial number and replace it with the "RF" number after the rebuild. "RF" indicated the Richmond Ford Plant. The "RF" block I saw had hardened valve seats.