I just changed the headgasket on a 98 12V. Everything was straight forward. The only thing I had a question about was the crank pulley. It did not have a key way in it, so I assume it could be installed any way. Well after I changed the head gasket, I slid his torque plate back towards the firewall as to remove some of the power. It was boosting 35# before and he wanted a safe 25#. Well got it all put back together and truck runs fine except when you drive it, it will not make over 5# of boost. No smoke and no power. Also anything after about 1/3 throttle there is nothing. If 5th gear if you ride down the road and mash the throttle to the floor, nothing happens. Any ideas what I have done wrong.
Thanks in advance.
Thanks in advance.