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Depends on what your goals with the engine and car are. For a quick dependable 35 plus HP with easy driveability the hot cam with the LS6 package (243 heads/10.8 compression) works great. The springs will handle the lift and therefore you do not need to go to double springs.
GM has done a very good job with some of the crate and cam packages for driveabilty, dependability and horsepower. Once you start to want to get too much above the 500 engine horsepower range you need to think about aftermarket equipment. There are a lot of great vendors with some very neat packages on the forum.
I personally would not do the hot cam. There are PLENTY of other cams on the market that will make more power and run smoother. Pm me if you need advice on some.
I personally would not do the hot cam. There are PLENTY of other cams on the market that will make more power and run smoother. Pm me if you need advice on some.