I have a 99 sierra 5.3 and I want a lot more power, its got a hypertech power programmer and airaid cold air intake with throttle body spacer and ram air intake hood plus a cat back exhaust.

So theres no problem with this thing breathing, I can't even spin my tires (305/40/22) yes I know they are heavy. I need more power, thinkin forced injection but I'll only do an edel brock at the moment. I don't want to do a torque converter until I need a new transmission.

Anything helps, any other questions I'll be happy to ask. It is 4WD but I do not know the diff gear ratio. thanks in advance

 

3000stall

 

Cam,headers,real tune and ditch that paperweight throttle body spacer

 

I hear cam, headers, and real tune everywhere. I know where I'll get the tune, but I can't find a cam that doesn't require a very high stall even on a mild cam...