The Ford Barn - View Single Post - Tapped Steam Hole Plug Size Model B block

Charlie Stephens · 08-12-2017, 12:13 PM

The issue down the road you are trying to avoid is that if you run a stock Model A head on a Model B block the holes will be too close to the edge of the gasket due to the shape of the combustion chamber and will probably leak. If you run a Model a Police head, a Model B head, or one of the aftermarket high compression heads that I have seen there is no problem and you can forget about closing the holes. I don't think I would ever build an engine and use a stock Model A head.

Charlie Stephens

08-12-2017, 12:13 PM	#3
Charlie Stephens Senior Member Join Date: May 2010 Location: Southern California Posts: 7,030	Re: Tapped Steam Hole Plug Size Model B block The issue down the road you are trying to avoid is that if you run a stock Model A head on a Model B block the holes will be too close to the edge of the gasket due to the shape of the combustion chamber and will probably leak. If you run a Model a Police head, a Model B head, or one of the aftermarket high compression heads that I have seen there is no problem and you can forget about closing the holes. I don't think I would ever build an engine and use a stock Model A head. Charlie Stephens Last edited by Charlie Stephens; 08-12-2017 at 12:18 PM.