How to ID your Engine?

[Skrappi69]

Hi all. I know the drill and searched the forums first, but could not find something specific to my question.

How do I ID the engine in my 99 Grand Prix?

It was a salvaged car. The plastic cover for the motor that ID's the motor is gone. Nothing on the inside of the door or under the hood that I can see. This is not a super charged model. At least not that I could tell.

Advice?

Thanks!

[TheOtherNick]

8th vin digit is a k for the n/a 3800, 1 for supercharged 3800, and L IIRC for the 3100.

[Skrappi69]

Ok, the 8th digit is a 'K'. Therefore my motor is the 3.8. To be clear, the digit in the 8th position denotes 3.1, 3.8 and or supercharged 3.8.

[matt5112]

Go to the trunk.

Look for the service package sticker.

it'll have the vin and the following code "L36" somewhere in it.

THe eigth digit is for the engine. for your year, J is the 3.1, K is the n/A 3.8 and 1 is the s/c 3.8

[machinegunsquid]

Just gonna say...

Pop the hood, if it says 3100 on the intake manifold in large letters...like so.
2000 Pontiac Grand Prix 4dr Sdn SE Photo Engine - Consumer Guide Automotive

and if it's got a black plastic intake manifold, then its a 3800, like so...
http://static.cargurus.com/images/si...035075024.jpeg