I was refering to fly wheel horse power. The factory motor has 280 hp, 410 lb-ft stock so you must be talking about rear wheel horse power? I have 3.55 gears in my truck, so my rwhp isn't going to be to great, but I want to get all I can. I will be keeping the 3.55 gears though, because I do drive the interstates alot and need to have half way decent milage. Oh and the truck does have a 5 speed manual tranny in it. I was hoping that the crane cam would work, but I better not try it because I really don't know what it would do with my computer. Are there any of the Crane Compucams that would fit my application? Thanks for all the help.