performance · FF-0478

How fast does a stock Flathead normally rev?

About 3,000 RPM is the top for a stock Flathead. That is why, as someone at the dyno puts it and Ed agrees, Ed thinks 6,000 on a Flathead is like grass on Mars.

Expert

Ed Smith

Evidence

expert attributed

Component

stock RPM

Applicable scope

Steve Coppock's supercharged ARDUN overhead valve Flathead, 8BA block, about 289 cubic inches, with a Weiand 177 on the engine dyno at Klein Engines