99 Grand prix GTP

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=34090
Printed Date: May 03, 2025 at 11:16 AM

Topic: 99 Grand prix GTP

Posted By: decca
Subject: 99 Grand prix GTP
Date Posted: June 17, 2004 at 8:18 PM

hi there

was wondering if anyone could let me know the gap specs on my sparkplugs for a pontiac grand prix GTP supercharged?

I've looked in my manual and online and cant seem to find it

any help would be appreciated....thanks

Replies:

Posted By: Planetium
Date Posted: June 19, 2004 at 8:26 PM

This type of information is not easy to come by, but you can find every spec on your engine in a Chilton Shop Manual (chiltonsonline.com). I've had one for every car I've had, they illustrate how to perform every possible operation on your car, right down to torque specs and GM reorder part numbers. If you plan to do a lot of work on your car, you should probably look into getting their book.

Sorry I don't have the information, but I'm positive these guys do.

Posted By: auex
Date Posted: June 20, 2004 at 12:59 AM

At cskauto.com I see it is supposed to be .060. Or at least that is what the factory preset appears to be on the pre-gapped plugs.

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Posted By: backinblack_gp
Date Posted: July 21, 2004 at 8:30 PM

Take a look around the drivetrain forums of www.clubgp.com. Many knowledgeable people there... Including myself... posted_image

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