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I was referring to cam only. If the guy takes a bone stock LS1 out of a used car and puts a cam in it with nothing else he wants to see 400rwhp.
Exhaust, CAI, headers, pulleys, rockers all that help of course.
Id like to see someone who actually has exactly that not a link to someone who knows someone who said they did.
Im not doubting, just curious to see a real world result and yes a bit skeptical.