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Thought this was a proformance thread ? doesn't any body know anything about building a motor up ????? i Quess ur idea of proformance is lift kits and suspension !!!! i will post on the dodge forum same 4.7 5.2 5.9 are the same anyway at least get answers quickly

I have a 98 jeep grand cherokee 5.9 i have comp cam 210x/220 -int 0.480/exh 0.480 lsa 110 1.7 roller rockers rt 202 heads with .600 springs headers &ford 21 lbs injectors cold air intake no cat w/original 40 series single in dual out flowmaster muffler im looking for a bigger cam maybe a 220...