1986 pontiac grand prix gauge size

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Longroof79

Rocket Powered Basset Hound
G-Body of the Month
Oct 14, 2008
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if you keep on asking him maybe he'll make one for you just to stop you from asking....:p
Hey, there's a thought...;)..... I'd have to take this endeavor on myself. Good suggestion, though.
 

Longroof79

Rocket Powered Basset Hound
G-Body of the Month
Oct 14, 2008
12,156
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Gainesville, Fl
I can't take credit for that suggestion, my grand-kids use that method on me all the time.....:D
Are you saying that they got you wrapped around their fingers?:p
 
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454GrandPrix

Master Mechanic
Jul 27, 2016
429
818
93
Lehi, Utah
On my GP, I installed a quartet of 2 1/16" AutoMeter Sport-Comp gauges to replace the idiot lights. They are a tight squeeze into the bezel of the gauge pod itself (not the huge dash bezel piece); I used a grinder to slightly enlarge the holes so they would insert a bit easier. They are still a snug fit, so at least they won't move on me.

Gauges2_zpsmlwhub5p.jpg


As for the speedo and tach, I bought matching 3 3/8" gauges and installed them in a similar manner. In this case, the gauge bezel holes were larger than the gauges themselves. To compensate, I bought a rubber plumbing coupler at Home Depot and trimmed the ends to use as a pair of 'bushings' around the gauge housings. Since the coupler was black, you hardly even notice this once the gauges were installed.

Gauges1_zps34flhekb.jpg


With all the gauges installed, the big dash bezel installs perfectly right over top of everything. I am very happy with the completed look.

Shifter_zpswmmnab3v.jpg
 
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GP_Vortec350

Not-quite-so-new-guy
Oct 12, 2014
10
0
1
Virginia
On my GP, I installed a quartet of 2 1/16" AutoMeter Sport-Comp gauges to replace the idiot lights. They are a tight squeeze into the bezel of the gauge pod itself (not the huge dash bezel piece); I used a grinder to slightly enlarge the holes so they would insert a bit easier. They are still a snug fit, so at least they won't move on me.

Gauges2_zpsmlwhub5p.jpg


As for the speedo and tach, I bought matching 3 3/8" gauges and installed them in a similar manner. In this case, the gauge bezel holes were larger than the gauges themselves. To compensate, I bought a rubber plumbing coupler at Home Depot and trimmed the ends to use as a pair of 'bushings' around the gauge housings. Since the coupler was black, you hardly even notice this once the gauges were installed.

Gauges1_zps34flhekb.jpg


With all the gauges installed, the big dash bezel installs perfectly right over top of everything. I am very happy with the completed look.

Shifter_zpswmmnab3v.jpg
I'm stuck at running the fuel gauge wiring I was thinking can I use the factory connector find what each wire is for but I'm having a hard time
 

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Texas82GP

Just-a-worm
Apr 3, 2015
7,981
18,676
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Spring, Texas
Wire color is the key.
OptionalGagePackage.jpg
 
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