I have a 2001 Pontiac Montana 3.4 L. The engine needs head gaskets at a minimum and has 150,000 miles.
Will a 2000 Pontiac Grand Am 3.4L motor fit exactly, or will it need to be altered in any way? I have received differing opinions- some say it must be another 2001, some say it must be a 2001-2002 from another Montana. HELP!!!!
To change from the grand am to fit montana u have to change upper an lower intake wiring harness for fuel inj differant and front timmig cover all said an doneiwould keep to a 2001 if possable 1999 an 2001 are odd yrs
Believe it or not all GM 300 series motors are very similar and they all give head or intake problems whether its in the grand am, grand prix or montana the 3.4 is just that a 3.4. GMs not going to make a different 3.4 for each car they're all the same, it will fit. Do yourself a favor and make sure its not the intake gasket thats the actual culprit.
I am going throught the same thing i am doing a motor swap in a grand am i am using a 99 3.4 from a grand am and am putting it in a 2000 grand am i have already had to change the upper and lower intake harnesses and installed the motor in the car and now i have no spark. I have found out that the cam sensor could be an issue becase they are different from the 2000 in the 99 motor. PLEASE make sure you do your homework on your motor swap i am on my 5th day on this car and am ready to burn it.
Good luck Mike
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It is definitely the head gasket.
I'm looking for an engine that will swap exactly, without changing the intake/exhaust/emissions etc. I'm sure that not every GM 3.4 will interchange perfectly- I'm trying to determine what would have to be swapped on a 2000 Grand Am engine vs the 2001 Montana.
Thank you- I suspected that there would be some required changes- thanks for the details. I will look for an 01.
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