Originally Posted by
khudzik
I'd have to say it all depends on a particular .21 and a particular .28 one is talking about. I would not just claim that .21's are faster than .28's on top end period. Here's an example:
Tuned GRP .28 engine - RPM redline is 43,000
Tuned GRP .21 engine - RPM redline is 43,000
Picco .21 P7 EVO 3 engine - RPM redline is 30,000
I realize the GRP's are turbo but still.
you must realize that a manufacturers claimed RPM and HP figures mean nothing.... So the numbers you posted in no way shape or form reflect how much RPM these engines will pull in real life conditions....put a GRP .28 next to a EVO 3 with the same gearing and watch what happens !