Quote:
Originally Posted by bigjimzlll
If you noticed I said real world HP numbers. I have nothing against desk top dyno programs if you use them to track trends. It has been my experience...having built and dyno'd a few engines.... making over 1 HP per cubic inch is not as easy as magazines make it look. If it was the big 3 auto makers would of been doing it all along.
If you think about GM's 454 in the late 70' early 80's made barely over 240 HP.
My full race 540 males 840 HP...thats 1.55 hp per cubic inch
The 427 at 605 HP is 1.4x per cubic inch. Out of a pump gas truck engine?
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yeah i thought that was a little high myself but i just checked it for a baseline, somewhere i heard that Desktop dynos are about 20 percent off on HP and 10 percent off on tourque but i'm not sure