The 3.0L cylinders are siamesed with no water jackets running between them, unlike the 2.5L. What does this mean ... the hot spot in these engines will be between the cylinders and that will eventually lead to a crack if the heat build-up is enough. How much is too much to cause this hot spot to crack? That remains to be seen. If you want a 400+ car, I would stick with the 2.5L, bore it out to 2.8L, press in Darton sleeves and boost the hell out of it. However, since you are looking for a fast reliable car, I personally would run 10-12psi on a well built 3.0L and sustain a reliable 300-350hp, which has been done with no ill effects.
Last edited by fastcougar; 04/13/04 06:24 PM.
