It didn’t take long for this sharp 2015 LS3 to return to us for more modifications after his install of Kooks Headers (previous blog HERE). Previously, the car made 426rwhp with just an intake and headers. We added only our Phoenix cam and had the heads ported and polished to 280cc by Advanced Induction – picking up 75rwhp! Final numbers were an impressive 503rwhp & 441 ft/lbs tq (stock intake manifold). Our Phoenix cam is a slightly larger version of our 545 cam, still offering great driveability. We also added our Brian Tooley Deluxe Cam Install kit, along with a COMP Trunion Upgrade and a Melling 10296 oil pump as well to help support the new cam.