Re: Traded for a French Flathead Block
From my experience with one NOS French block the ports directly below the valves were extremely small in diameter it appears no secondary operation was performed to open up that area compared to the stock Ford blocks. Also the internal diameter of the oil passage the pipe located in the valley is a much smaller diameter than the Ford oil passage. Now these two issues may not effect the original application for these engines that being placed in military vehicles. However in my opinion a reliable street Flathead would mean its at least similar to the Ford production design for some performance and of course economy. The French block is certainly an excellent platform to work from the above listed items can be improved upon i know since I did improve on those areas when i ran one in my car to a speed of just over 180 MPH many years ago. But the Ford blocks I run are now over 200 MPH.
Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish.
"Life Member of the Bonneville 200 MPH Club using a Ford Flathead block"
Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline.
First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH
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