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JWL · 12-02-2019, 07:43 AM

There has never been a gas burning Flathead which could make within 100 horsepower of 328 on my dyno. It is fair to say there can be significant differences from one dyno number to another and neither of them accurate except within itself. That is why I went to great lengths, in my book, to expound the fallacy of announcing horsepower numbers. The important thing when using any test device is to have repeatable results so that the value of changes can be properly evaluated. And, for that purpose most properly operated dynos can do a good job.

12-02-2019, 07:43 AM	#33
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Early V8 Dyno Work There has never been a gas burning Flathead which could make within 100 horsepower of 328 on my dyno. It is fair to say there can be significant differences from one dyno number to another and neither of them accurate except within itself. That is why I went to great lengths, in my book, to expound the fallacy of announcing horsepower numbers. The important thing when using any test device is to have repeatable results so that the value of changes can be properly evaluated. And, for that purpose most properly operated dynos can do a good job.