I’ve been over the dyno numbers with someone very knowledgeable. The conclusion was the BSFC numbers were not that great. When it made peak torque it was under .5 but the peak power number was over .5 which is essentially not using the fuel.
It was also questionable whether the dyno was calibrated properly because for the amount of fuel being used the power numbers didn’t add up. The correction factor was right but the idea was that the fuel amounts were off. They didn’t use a hat/fan thing either.
The dyno facility is at sea level and it was mine-shaft air that day. I’ve thought the correction actually took power away but that wasn’t the case unless the fuel calibration was truly off. There was also very little done in the way of carb tuning so there may have been some amount of power left by not working on the carburetor more.
There’s no definite answer here so I’m sort of left guessing at what could be holding it back if it is being held back at all. I spoke to the guy that did the heads afterwards and he said a “better” intake could be worth 15hp. Given the way the numbers look it makes sense.
