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JWL · 05-20-2011, 05:47 AM

Ron is right. It requires a "competition only" modification level to get an honest 200, unblown, Flathead HP. Most engines won't even come close. I have made several pulls with a variety of modifications to the 276 in my 1940 sedan. It makes a best of 135 HP on my dyno. I have had only one engine which cracked the 200 HP barrier and it would be considered a maximum effort engine suited only for competition use. 305 cubes, roller cam, sheet metal intake manifold, weeks of intake port and guide work, huge tit. valves, etc. etc. etc.

05-20-2011, 05:47 AM	#19
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Good HP numbers? Ron is right. It requires a "competition only" modification level to get an honest 200, unblown, Flathead HP. Most engines won't even come close. I have made several pulls with a variety of modifications to the 276 in my 1940 sedan. It makes a best of 135 HP on my dyno. I have had only one engine which cracked the 200 HP barrier and it would be considered a maximum effort engine suited only for competition use. 305 cubes, roller cam, sheet metal intake manifold, weeks of intake port and guide work, huge tit. valves, etc. etc. etc.