1995 Pontiac Grand Am

RACENUT60

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1995 PONTIAC GRAND AM

Engine Mechanical problem
1995 Pontiac Grand Am 6 cyl Two Wheel Drive Automatic

engine change

Monday, July 13th, 2009 AT 8:11 PM

5 Replies

MMPRINCE4000

MECHANIC
8,549 POSTS

Little more info please. Do you want to put new engine in? Different engine?

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Tuesday, July 14th, 2009 AT 9:34 AM

RACENUT60

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I have a chance to get a 1995 3.1 engine and would like to install it into a 1997 grand am with a 3.1 Have been told that 94&95 3.1 engines are different than 96&97 3.1 engines

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Tuesday, July 14th, 2009 AT 7:46 PM

MMPRINCE4000

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Yes, while the engines may look the same the PCM's are different. The 95 is an OBD1 while the 97 is an OBD11.

You may be able to use the long-block, but not the complete engine. Look for any sensors on the 97 block and heads that are not on the 95. If none, then use intake manifold, exhaust etc. From the 97.

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Wednesday, July 15th, 2009 AT 8:26 AM

RACENUT60

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Thanks for the info, I will do a little more checking on the two different year engines when I possibly can getbthe cars side by side. As far as you know, the flywheel and transmission are the same? I would be able to change the manifolds if that is necessary.

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Wednesday, July 15th, 2009 AT 10:02 PM

MMPRINCE4000

MECHANIC
8,549 POSTS

Yes the engines will bolt up, the problem will most likely be a different crank/cam sensor and/or location, and other sensors like knock sensor for example.

Look at them together, you may be able to use the old PCM on the new engine or visa versa.