[twobjshelbys]

Way back when I remember hearing about an engine with larger displacement than the original the question always was "what happened that you had to bore it out (and usually sleeve it)?" In other words, something happened and the engine got rebuilt. Now with some it's become a standard practice. Not sure what the benefits are. For example, the Dodge Hemi 6.2 is a bored/stroked 5.7. When the 5.7 first appeared in the Challenger many after market superchargers were available. Hardly any of them were recommended for the 6.2 the S/C guys saying the cylinder walls were thinner and that the 5.7 was capable of higher hp without damage.

I had a personal issue justifying such high HP in a Cobra. Mine was 550 and it was impossible to put that much power reliably and safely to the wheels (tires). Maybe with slicks but with the Goodyears that were on my car it was dicey.