What carburetor was on that ? By the BSFC's it appears on paper that it may have been too small.

800 Holley DP

Something was out to lunch. You have a wideband a/f report on that run ?

We talked about that on his thread. I didnt build the engine dyno it or anything. He lives in Nevada, I live in Chicago. It was just an example of a 454,build another oso member built

Otay but it has brutal BSFC's.

Yes. I question the accuracy of that bsfc reading. I believe for bsfc numbers to be accurate several things need to be setup properly on the dyno/software.

Fuel Flow and Horsepower. That is all that is involved.

Yep, BSFC's were horrible with my carbs as they were. They were "normal" with the shop's carb and still had same power numbers, go figure..Carbs were set up out of wack I believe

There is a little more to it than that, but OK.

Looking at that dyno chart- I would see zero reason to prop that engine anything past 5100…. 5200-5300 the engine is losing power, at 5400 it's up 3 hp , then its down at 5500, and at 5600 it's up 6 hp over 5100 rpms. In my book, that engine is done at 5100 rpms..