to the right of the fuel rail mounting bolt (right side bolt) is the hex-head intake mounting bolt that passes under the thermostat housing. Wont come off without removing it. Well...it will but you wont be reusing that intake.

Is the head off the block or are you leaning over the fender? If still in the truck, you also need to disconnect the heater return pipe from the bottom of the intake manifold. Easiest way to remove the intake from the head is to pull the head out and get it on the workbench so that you dont break anything.

~Darin <img src="/forums/images/graemlins/baby.gif" alt="" />