2002 grand prix motor into 95 bonne. HELP! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-16-2007, 09:41 PM   #1
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Default 2002 grand prix motor into 95 bonne. HELP!

The motor in my 1995 Bonneville is toast. I bought a 2001/2 grandprix with the 3800 motor to swap into the 1995. I'm not too familiar with the motors computer. Are there going to be any electrical issues? sensors?


Any information would be greatly appreciated.

-matt
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Old 12-16-2007, 09:48 PM   #2
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Your Throttle Body will need to go onto the new motor, The Original MAF will have to be used.. The Knock sensors many need to be swapped out, The O2 sensor will have to be changed over as well.... I can't remember all of it off the top of my head... But you'll have brackets that will have to be changed to as well the oil filter adapter should be swapped...

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Old 12-16-2007, 09:51 PM   #3
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Do they make adaptors for the engine mounts? or is it going to be a custom job?
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Old 12-16-2007, 09:56 PM   #4
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Quote:
Originally Posted by THoy702
Do they make adaptors for the engine mounts? or is it going to be a custom job?

Adaptors?

You are going to remove the W Body Mount brackets and attach the H Body Brackets to the new engine..

For the TAM( Torque Axis Mount ) on the GP engine you'll see a couple of bolts that are used to plug the threaded holes... Those will be removed and you Bonneville parts installed...

Same goes for the Dog bone brackets on the front of the GP motor, those brackets will simply be removed...

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Old 12-16-2007, 10:16 PM   #5
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My biggest concern is whether or not the computer in the 1995 will work with 2002 motor.

does anyone know if there were a difference in anti lock brakes between the years?
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Old 12-16-2007, 11:58 PM   #6
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Quote:
Originally Posted by THoy702
My biggest concern is whether or not the computer in the 1995 will work with 2002 motor.

does anyone know if there were a difference in anti lock brakes between the years?
Just swap the engine harness over too. It won't have any computer problems. It'* the same engine.

You'll also have to use the rear manifold from your 95.

Edit-
And the new engine isn't going to effect your brakes.
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Old 12-17-2007, 01:04 AM   #7
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I'm not all the familiar with these cars here, however i'm pretty sure that you won't be able to use a W body harness on an H body
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Old 12-17-2007, 01:28 AM   #8
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Quote:
Originally Posted by White93z34
I'm not all the familiar with these cars here, however i'm pretty sure that you won't be able to use a W body harness on an H body
no, you use the existing bonnie harness. you only swap the block, heads and intakes. everything else is from the original to the car. including the throttle body as previously mentioned.
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