Quote:
Originally Posted by DGthe3
Its a hell of a lot easier to get an extra 10% more power when you start with ~69 hp/L (current 4.6L or LS3) than it is when you're at 82 hp/L (new 5.0L), so long as both are naturally aspirated. Thats just how it works. Are there gains to be made? Sure, just not as much. Modifications are not magic. Every engine obeys the same laws of physics and has certain limits. The closer you are to those limits when you start, the less bang for your buck you get when you try to improve it.
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+1 on that!!
That's why a N/A LS3 will always make bigger #'s than a N/A 4.6 (or 5.0). There is no replacement for displacement!! That also why so many 4.6 owners went F/I, it's the only real way to get decent power out of a smaller engine and still have it driveable. The larger LS motors have had and will continue to have a HP/Torque advantage over the smaller Ford motors. The only way for Ford to close the gap is to put their motors into lighter cars.
