Professional Products LT1 Throttle Body - Waiting To Inhale

If the TB's coolant lines are still connected (we bypassed ours in a previous issue), you'll need to unhook them as well.

Next, remove the four bolts that secure the throttle body to the intake manifold.

Even with the bolts out, the throttle body will most likely remain affixed to the intake. A sharp rap with your fist should break it loose.

Set the old throttle body aside, then use a razor blade to scrape away any gasket material that remains on the intake's mating surface.

Take care to prevent debris from falling into the intake bores.

Place the old throttle body on a bench or table, and remove the bolts that attach the IAC manifold.

Remove the manifold and set it aside.

Next, unbolt and remove the TPS. Set it aside, along with the round rubber insulator.