Originally Posted by montecarlo84
Originally Posted by TopspeedLowet
My guess is 410 uncorrected horsepower peak. The calculation is pounds of fuel per hour divided by the Brake specific fuel consumption right off your dyno sheet. That is the observed horsepower, before the sea level correction that the engine is NOT doing on the dyno.
Is that because it is a ford
No, it's not a ford thing. It's a dyno thing. I can make any number show up after correction on your dyno sheet with bogus weather correction's and friction factors. This is how engine builders and marketers sell there engines and how they fudge the numbers, with barometer corrections The actual numbers or observed numbers that the fuel# and BSFC numbers give are what your torque converter sees and what you actually have to push your car down the track with. Not the corrected to sea level or mega sub sea level numbers you likely see on your dyno sheet. Take your weather station to the dyno and find the C.F. correction factor. You then multiply the correction by the observed #'s to get the unimportant sea level corrections #'s. This is how you can police your engine builder dyno operator. This info will save you from getting the wrong info to your torque converter builder and give you real world #'s. I used to work for a Lin/ Merc dealership in north palm beach florida in the late 80's and made a good living off ford back then. I think the Chevy guys are more likely to accept bogus numbers, because they all expect big easy horsepower that the builders publish. As a recovering Oldsmobile engine builder, I can tell you that I have had many 500 HP small blocks that out ran other guys 700HP dynoed engines. Go figure.
I would adjust my estimate of 410 to 450 if I could, but I will have to stick with the first card I played like every one else. The bore diameter is why I chose the 410 earlier.