performance · FF-0597

How much power are ARDUN heads worth over a well-built Flathead?

About 100 horsepower. Steve says that with a well-built Flathead, with carburetors, cam and porting, you are doing pretty good if you get 200 out of it, though some would argue a little better and he agrees. So the heads are put at probably 100 horsepower over a well-built Flathead, and that is agreed.

Expert

Steve Coppock

Evidence

expert attributed

Component

ARDUN heads versus Flathead heads

Applicable scope

Ford Flathead V8 with Don Ferguson reproduction ARDUN overhead valve heads, Steve Coppock's engine of about 289 cubic inches, single four barrel, on the dyno at Klein Engines