Re: Ford flathead roadster at Speedweek fastest run ever
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Originally Posted by Shoovel
Congrats. WOW watching that video was awesome. 6000 RPM. I never thought a Flatty would hold together at that RPM. What does a regular Flatty rev to safely?
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Shoovel the answer to the question can vary a bit. For overall reliability the Merc and Ford cranks will hold together at 6000 RPM anything over that can be a time bomb. The Ford 8BA style connecting rods are actually pretty strong they will handle the 6000 RPM easily as well.
Most stock ford flatheads will run easily to 4500 and above that down hill the limiting factor is how well the engine can breath. A modified flathead with higher compression more carburation and a cam can pull 5500 to 6 grand depending on the gear ratio of the rear axle.
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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