You should get in touch with EPS they can custom grind you a cam for about the same money as an off the shelf unit. They are good and have cams in some of the fastest LSX motors in the US. Engine Power Systems www.engpwrsys.com
ive had great experience with total engine airflow.. but in all honesty id upgrade to large port heads... a pair of TEA stage 2 l92 heads and a stock ls7 intake will put you well in to the 600+ HP range with a streetable 230 deg XFI lobe cam, victor ir vic jr intake can add another 50 Hp on the right combo.. check ls1tech.com
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Elwood:We're 105 miles from Chicago, we have a full tank of gas, half pack of cigarettes, it's dark out and we're wearing sunglasses.
Jake: Hit it.
I spent the $25 to have Pat G (you can google him) design a custom cam with the EPS lobes for me. I'm combining that with AFR heads with a goal of good drivability with decent low and midrange torque. In my case I am not focused on peak dyno horsepower since the car will be largely street driven.