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How to Put a Belt on a Grand Prix Super Charger

Putting a new belt on a supercharged Pontiac Grand Prix is nearly identical to putting the belt on a standard Grand Prix. The Grand Prix GTP was introduced in 1997, and with it the supercharged 3800 Series II. The Grand Prix GTP with the supercharged 3800 motor was capable of producing between 200 and 240 horsepower, depending on the use of L36 or L67 engine models. The belt routing between the L36 and L67 is an identical procedure. The Grand Prix was replaced by the Pontiac G6 and G8, before Pontiac was removed in 2009 from the General Motors line of vehicles. Pontiac produced cars since 1926.

Instructions

1

Open the hood and stand on the passenger side of the car facing the belt side of the engine. Loop the belt underneath the bottom pulley or the crank pulley, in the outer track provided. The supercharger belt on the 3800 SC is the outermost belt, as there are two belts on this engine.

2

Hold the belt taught in your right hand so you do not lose your grip on the crank pulley. Run the belts smooth side or back on the front side of the two supercharger idler pulleys. These two idler pulleys are are about three inches in diameter. The lower supercharger idler pulley sits at the two oclock position, just inches above the crank pulley. The upper idler pulley sits on the top front face of the engine.

3

Loop the inside of the belt, or the grooved side, up and over the supercharger. Maintain your grip with your right hand on the belt to maintain your positioning of the belt.

4

Set your left hand on the top of the supercharger pulley and hold the belt still. Slide your right hand down the belt toward the front of the car until you reach the tension pulley.

5

Pull the belt tight again with your right hand, and use a 3/8-inch ratchet and socket with your left hand to push the tension pulley down towards the bottom of the engine. If you feel uncomfortable in this position, set the ratchet down and grab the belt with your left hand. Use your right hand on the tension pulley if this feels more comfortable to you. Slide the belt over the tension pulley, making sure that you keep your hands clear from the point between the belt and pulley.

6

Release the tension pulley and let it retract to its upright position, and remove the ratchet and socket from the tension assembly.

7

Inspect your work to make sure the belt is centered on each pulley, and sitting in the proper channels provided in the crank pulley. Clockwise from the supercharger, your belt should go to the front side of the tension pulley, down and around the bottom of the crank pulley, up around the front sides of both idler pulleys, and back to the supercharger.