Originally Posted by sharptech
I was under the impression that the only diff between the srt motor and na was pistons (lower compression) and engine management, and of coarse the blower
... I don't see why the na motor should not be able to put down 420 to the wheels stock trim. My srt-4 put down 485 whp to the wheels stock motor just fine and 530 trq.
The pistons, crank, rods, cams are all unique to the SRT. I'm sure there are other items too but those are the ones that come to mind.
I have often wondered how/why some engines of similar size can make vast differences in horsepower. Is there more potential in these engines that no one has even begun to tap into?
Those are some damn good numbers on your SRT-4. What are the specs on your engine?