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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-11-2009, 02:47 PM   #1
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Default Identifying engine and transmission

Hi All,

I've got a 1995 Pontiac Bonneville, and I'm not sure which engine and transmission I have. Can anybody point me in the right direction, or tell me how to decode the VIN to determine this?

The engine says "3800" on the plastic cover, for whatever that'* worth.

-Josh
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Old 10-09-2009, 05:47 PM   #2
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The options are in trunk. Find the RPO label on the spare tire cover and look up the three digit codes in the following link:
https://www.gmforum.com/t279296/

VIN decoder:
https://www.gmforum.com/t280043/

If your car is super charged:
3.8L Series I L67 V6
Years Used: 1994 1995
Family: GM Buick 90* V6
Model: Series I Supercharged 3800
RPO/VIN: L67/1
Displacement: 231 cu in (3,791 cc)
Stroke: 3.40 in (86 mm)
Bore: 3.80 in (97 mm)
Power: 225 HP @ 5,000 RPM
Torque: 275 lb-ft @ 3,200 RPM
Compression: 8.0:1
Aspiration: Supercharged
Compressor: Gen 3 M62

If your car is not super charged:
3.8L Series II L36 V6
Years Used: 1995 1999
Family: GM Buick 90* V6
Model: Series II 3800
RPO/VIN: L36/K
Displacement: 231 cu in (3,791 cc)
Stroke: 3.40 in (86 mm)
Bore: 3.80 in (97 mm)
Power: 205 HP @ 5,200 RPM
Torque: 230 lb-ft @ 4,000 RPM
Compression: 9.4:1
Aspiration: Normal

Let me know if you need more.
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