560hp/566tq, this is the stoutest 4.8 I have ever worked on. Truck is a blast to drive, definitely going to hurt some feelings! Stock unopened 4.8 with Comp 224/230 cam, Edelbrock carb intake with elbow, Trick turbo kit, Precision 76/75. Launching off the trans brake it hooks and goes, looking forward to a track pass next year. A Boost Leash and Devils Own meth kit are on the winter to do list so we can turn this one up some more in the spring.