Like Tree0Likes

Pontiac Grand Prix GTP????

Old 03-22-2004, 11:46 PM
Thread Starter
mpally's Avatar
Join Date: Oct 2000
Location: St. Louis/ LOTO
My Boats: 36 Outlaw
Posts: 1,371
Default Pontiac Grand Prix GTP????

Does this car require premuim gas since it is supercharged? I have heard both. Anyone have any experiances with these or a regular Grand Prix GT?
mpally is offline  
Reply With Quote
Old 03-22-2004, 11:57 PM
Forum Regulator
VIP Member
Trade Score: (1)
Sydwayz's Avatar
Join Date: May 2001
Location: Worldwide
My Boats: 17' Speedliner Cat & O.P.B.
Posts: 21,924

If you do not get a good answer here, I will call my Mom's mechanic, Keith Brommelkamp of Water 'n' Wheels oustide of Chicago. He is an EXCELLENT mechanic, and drives a GTP for his personal car. Knows it inside and out.
Sydwayz is offline  
Reply With Quote
Old 03-23-2004, 12:11 AM
dockrocker's Avatar
Join Date: May 2002
Location: Deeee-troit!
Posts: 3,356

Friend has one. Premium only on the supercharged motor. Troutly nailed, it is a POS. Damn near every part including the supercharger has been replaced. Pontiac built that car twice, bet the warranty costs eat into the bottom line just a bit...
dockrocker is offline  
Reply With Quote
Old 03-23-2004, 12:15 AM
Mark D's Avatar
Join Date: Aug 2003
Location: Seattle, Washington
Posts: 169

We had the GTP's for company cars.
We ran them on Pacific Pride regular.
We got 100k but they loved to go through CV joints, brakes, timing belts, & indeed were full of rattles due to the stiff suspension.

But we drove them like we stole 'em.

Last edited by Mark D; 03-23-2004 at 12:25 AM.
Mark D is offline  
Reply With Quote
Old 03-23-2004, 12:17 AM
Are we having fun, yet?
Charter Member
Gizmo's Avatar
Join Date: Mar 2001
Location: Chesterfield, Va.
My Boats: 95' 32' Sunsation, 500hps
Posts: 781

mpally, I just bought a 98 GTP a month ago. The manual states that you can use 89 octane or above. The prevous owner (my B-I-L) used 89 octane and so far, I haven't heard any valve noise or spark knock. My car has over 221,000 miles on it and I have been averaging over 23 mpg. I would say that the ride is about the same as a Camaro or Firebird. Not many bumps in the road get past it. The car is plenty quick, for a v-6, 240hp.
Gizmo is offline  
Reply With Quote
Old 03-23-2004, 12:39 AM
robyw1's Avatar
Join Date: Jul 2003
Location: Spring, TX
My Boats: 1998 Wellcraft 22' Scarab
Posts: 2,759

I would avoid them, RUN RUN RUN

robyw1 is offline  
Reply With Quote
Old 03-23-2004, 01:29 AM
VIP Member
Platinum Member
wwwTOPDJcom's Avatar
Join Date: Mar 2002
Location: Vestal/Binghamton NY
My Boats: 1992 450hp Senza Spectre 25'
Posts: 3,477

stay with the GT and 98-2002 3.8FI
We have over 130k on Monica's and we drive it hard
so far new lower left ball joint and front rotors.

the GTP supercharged are just too much for the engine

the 94's Troutly was talking about did suck.
plus they were ulgy
they were much improved with the wide body style
the 99 GT we have with good tires handles very well
better then my 82 corvette

Last edited by wwwTOPDJcom; 03-23-2004 at 01:34 AM.
wwwTOPDJcom is offline  
Reply With Quote
Old 03-23-2004, 06:08 AM
Join Date: Sep 2002
Location: King george, Virginia/Potomac River
My Boats: 25' Checkmate Convincor, 19 Checkmate Convincor, 23 Crownline, a Sea Doo, a 12' sailboat, and two kayaks!!
Posts: 1,920

I have had a 98 GTP for 4 years and love it. 108k and it runs great. I'm tall (6-1) and the front seats go waaay back for a comfortable seating position. I have been using 89 octane for the last year and a half with no problems. Valve cover and oil pan gaskets, brakes, tires, a wheel bearing (ABS speed sensor is inside), and a tune up is all I have had to do. 23-25 mpg on the highway. I took it to Maryland International Raceway last year and it went 15.02 on the first pass leaving at idle. Not bad for a V6. The races rained out after that pass so I never got a second one. I'm sure it would have dipped into the 14's by bringing the rpm's up against the converter.
Shah Mat is offline  
Reply With Quote
Old 03-23-2004, 06:27 AM
Platinum Member
Platinum Member
CAP071's Avatar
Join Date: Jul 2001
Location: USA
Posts: 16,430

I had a GT and liked it. I would stay away from the GTP as well
CAP071 is offline  
Reply With Quote
Old 03-23-2004, 07:01 AM
Member #9
Charter Member
hp500efi's Avatar
Join Date: Oct 2000
Location: Pewaukee, WI
Posts: 4,269

I had a 98 GTP for about 4 years and overall it was a nice car. I used premium fuel for the most part.

Car held together and needed only tires
Member of the Liquid Jungle
hp500efi is offline  
Reply With Quote

Related Topics
Thread Starter
Last Post
Southeast US
03-24-2010 08:40 PM
General Boating Discussion
05-11-2008 08:44 AM
clean sweep
01-18-2005 02:42 PM
General Boating Discussion
05-13-2003 12:38 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 12:12 PM.

Copyright 2011 OffShoreOnly. All rights reserved.