As I have posted before my truck has a new head on it(dealer installed under warranty) from when it shot the plug out. All I have to say I certainly don't think it has anywheres near the power it did before hand. It has no low end grunt so to speak. Has anyone else had a head change and what was the outcome>??? Thanks in advance. -Mat- As a side note this could just be me because all my friends say it is still fast and I have yet to install my converter back in it. Still would like some opinions though.

 

well if you had mods in there before that you dont have in now your goin to feel slower...
seriously though, my shop told me that they always port match heads before they install them because most of the time the heads arent really matched up all that well to the block. maybe that could be why you dont fell as much power as before.