Max flat-head rpm?

On another thread a poster is worried that they are getting ONLY 1950 rpm!

Now, these little flat-head fours look VERY similar to the ones I've been seeing in Model A and T Fords all my life.

The figures for Model T are engraved in my heart: most develop maximum horsepower at around 35 mph; this translates to about 1500 rpm.

I'm less familiar with Model A (even though they were still a common sight when I was a small boy), but I seem to remember the hot rodders thinking 2000 rpm was too fast for a worn and more or less stock engine.

So, how fast is the engine in a late model 8N supposed to spin?

Ungoverned, the N-Engine was used in WW2 Jeeps and 1940 city delivery vans and pickups and coupes and was rated at 36hp at 3600rpms.

Some midget car racers used ungoverned N-Engines and developed about 60hp at about 4000rpms..... .respectfully, Dell

Yes, the Ford Motor produced prototype vehicle to the Army's call for light reconnaissance vehicle did have the N-tractor engine. (hey, it was already in production) Bantam had a BETTER DESIGN but Willys-Overland had better Quartermaster Contracting connections and was awarded the contract using Bantam's design.

Some of the early 1942 Jeeps had Ford flathead N-engines because Willys-Overland didn't have enuff production capacity. Finally, Ford got casting molds of the Willys block and that kinda eazed the OHV F-Engine production problem. There was a lotta "cross-licensing" made during WW2. Airplanes were 'nutter' area, as well as TANKS..... ..Dell, the un-insulted NON-authority

I knew Model A would spin faster; I don't know how many rpms hot rodders get out of them. Obviously, according to your info, at least 3500 or so.

Model T will spin faster too, of course. Most well-kept examples will go at least 40 mph, and many will do 50, which must approach 2000 rpm. But I wouldn't run one at that speed for long.