Quote:
Originally Posted by 330CIZHP
Yes, the gap is not that much. From what I understand, the stroker is far from maxed out at 520 HP. There is much more power to be had. It can easily put out a lot more power due to the increased displacement.
Another thing is that the stroker lengthens the stroker, which means less top-end focused car giving it a much stronger midrange and low-end. You can see it in the torque figures, which are 427 ft-lbs of torque compared to a gain ~ 30 ft-lbs with bolt-ons and tune (which makes it around 330 - 335 ft-lbs crank) while both are much closer in HP numbers.
I believe pencilgeek with his stroker M3 dyno'ed after tune around 446 wheel HP, which is a good 46 wheel HP more than a fully tuned bolt-on M3 (~ 400 wheel HP).
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Not bad, but the real test is to see what the trap speeds are. Im sure you know the trap speed is more indicitive of true power than a dyno, which can easily be manipulated.
I know the stroker lengthens the stroke making it a lower revving motor, giving way to the lower and mid range power, but I personally wouldnt want to kill the power at high revs.