What is the pushrod placement for a '99 Pontiac Grand Prix 3.1 liter engine?
HelloCustomer would you like me to provide you with the instructions for replacing the pushrods in your engine?
Hello, Jay. Yes, please. I have a Chilton's manual, but it isn't very detailed. Also, I need the order the pushrods are installed, i.e. exhaust, intake, exhaust, etc. I mixed two up during a intake manifold gasket r&r and broke a rod. Thanks again for your help.
HelloCustomer here are the instructions but it does not include exactly where the intake or exhaust rods go. I've done a number but I never memorize which one goes where. I will tell you that the exhausts rods are longer. If I ever lose my way or don't put them in order I just look at where they line up; for example I look at the valve and rocker arm that the pushrod I'm installing is lined up with and see if it is lined up with the exhaust or intake, from there I believe they alternate but you can easily do this with each one as well. Anyhow I hope I didn't lose you there, please reply with any extra questions regarding this procedure you may have and here are the instruction, thanks:
Valve Rocker Arm and Push Rod Installation
J 36660-A Torque Angle Meter
Important: All gasket mating surfaces must be free of oil and foreign material. Use GM P/N 12346139 (Canadian P/N 10953463) or equivalent to clean surfaces.
Important: Do Not apply RTV sealer to the engine block before/prior to the installation of the manifold gaskets. RTV sealer is not to be placed under the lower intake manifold gaskets.
Important: 1995 and earlier engines use hardened pushrods and steel pushrod guide plates. For service of 1995 and earlier engines, only intake pushrods with purple markings and exhaust pushrods with orange markings can be used. Failure to do so may result in engine damage.
Important: Shims may be required under the valve rocker arm pedestals if reconditioning has been performed on the cylinder head or its components.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Important: Thoroughly clean the fastener and tapped hole prior to installation.
Tighten Use the J 36660-A to tighten the valve rocker arm bolts to 42 N·m (31 lb ft).
How do I tell if the pushrod " is lined up with the exhaust or intake?" That's my dilemma. I don't know how to tell the difference.
HelloCustomer do you have the lower intake off at this moment like this picture:
If you do then if you look carefully into the intake passageway that goes into the head, you will see a valve; if you can see that when the valve opens it allows air from the intake in, it is an intake valve and follow it up to the top of the head and you will know you have to use a shorter pushrod there: Please reply if you still have questions, thanks.
Yes, the car I'm working on looks like this now. Thank you very much for you're help.
One last quick question: how much did it cost to r&r the lower and upper intake manifold gaskets? I'm just curious.
I'm a technician, so I'm not entirely sure how much but I believe a customer pays about $600.00 but that is in Canadian dollars, perhaps $500.00 in America.
Work at a Chevrolet, Pontiac, Buick, GMC dealer.