Accessing front speakers on a GP

kiko

kiko

Master Mechanic
Apr 14, 2009
260
43
Ottawa, Canada
If you're going through the trouble of removing your dash, then I would recommend scrapping the center speaker and installing two tweeters (or regular speakers) in each front corner of the dash. There's plenty of room underneath and the dash is solid enough to support the weight. Just a thought...

As an example, here's what I did:

GP Speakers 1.jpg

GP Speakers 2.jpg
 
Longroof79

Longroof79

Rocket Powered Basset Hound
Oct 14, 2008
10,139
113
Gainesville, Fl
Looks great, man. Nice work. (y)
I find with replacing the corner 3.5 spkrs, you have to make sure the center cones have enough clearance to the dash. Some of them protrude a bit higher than others.
 
kiko

kiko

Master Mechanic
Apr 14, 2009
260
43
Ottawa, Canada
Looks great, man. Nice work. (y)
Thanks! You're right regarding clearance, but if the OP removes his dash, then it's a no-brainer. Taking the time to make this mod will definitely pay off in the long run.
 
timo22

timo22

Master Mechanic
Supporting Member
Sep 10, 2012
449
93
St. Louis,Mo
Ive found when pulling the dash/bezel it is easiest to loosen the speedo cable bracket mounted below the master cylinder. You are then able to push the cable inwards to give you clearance to unhook the clip on the speedo housing.
 
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64nailhead

64nailhead

G-Body Guru
Dec 1, 2014
928
93
Upstate NY
Pulling the dash the 1st time is a pain, but after the first time it's a breeze. A couple of hours is all it takes in and out.

We put a Gran Prix dash in the Cutlass and then made a custom gauge, radio, switch panel. Putting the corner speakers in with the dash installed is impossible IMHO.
 
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olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
4,935
113
Melville,Saskatchewan
Man, I almost bought a 85 Grandprix years ago. After reading this, glad I didn't. I have blown a few of those speakers. That is totally insane on so many levels. I can change the front 3.5" on my 88 Cutlass in 5 minutes!
 
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