Speaker hole- less dash - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Jurassic-1** · 08-01-2009, 11:34 PM

I have a Blazer dash with no speaker grille has anyone else seen one? It is supposed to be from an early vintage and it would be from a Blazer which came factory without a top so the speaker was mounted under the dash.

Cap'n Hook · 08-01-2009, 11:39 PM

My '72 Jimmy has no hole anywhere in the dash for speakers!

**bigdon-70blazer** · 08-02-2009, 07:30 AM

The speaker was mounted below the dash on the Blazers not in the top like the trucks. At least that is where mine was and all others I have seen.

**SOON2BLAZE** · 08-02-2009, 08:53 AM

My blazer came with a double wall top and had a below the dash mounted single speaker. No holes in the top of the dash. IIRC all blazers came with this dash. Anyone?

**Joesjunk** · 08-02-2009, 09:58 AM

I have seen blazers both ways, I have no idea why some have speaker holes and some do not????

pound41 · 08-02-2009, 10:28 AM

My guess on why you have seen a few blazers with truck speaker holes is they are actually truck windshield/cowls. In doing a alot of research on my 69 camaro I found in books where GM line workers were interviewed. They said when cars/trucks came down the line if they were out of parts if a suitable part was available they went with it and didn't shut the line down.

hgs_notes · 12-11-2010, 01:50 AM

I have gone through a few of these bodies for parts, etc. I looked through some of my pics and found:

72 Chevy CST 2wd blazer - no dash speaker
72 GMC K5 (black one) - has dash speaker hole, It's hanging on my garage wall at the moment.
71 Chevy K5 - no dash speaker hole
71 Chevy K5 (yellow one) - no dash speaker hole
I also had a green 72 GMC K5 but I can't find a single picture that showed the top of the dash. I even had it cut out to sell to a guy and those pics are gone. I just can't remember what it had.

BTW, not a single one of them had the original speaker installed from the factory, either above or below the dash. Also, none were AC dashes, if that matters.

Critter · 12-11-2010, 02:54 AM

I have no idea the rhyme or reason behind it but I know a 72 Blazer could have been either/or on the dash speaker. I have often wondered if AM/FM setups got the in-dash speaker and AM only got the underdash??? Just a thought...

2003 silverado · 12-11-2010, 08:09 AM

I have a 72 Blazer cst w/am/fm a/c the speaker thats not there is under dash type.nothing in the dash???????????????????????????????

NuBomb · 12-11-2010, 08:41 AM

On my 72 CST w/air I had no speaker holes on the top of the dash. Once I got the truck aftermarket stuff was installed, but I did find the original speaker mounted as if there was a speaker grill on the dash. I have no clue what it might have sounded like.

2003 silverado · 12-11-2010, 08:45 AM

so i may have a speaker in the dash but with no dash holes??????? Have to have a look today

hgs_notes · 12-11-2010, 09:55 AM

Quote:

Originally Posted by Critter

I have no idea the rhyme or reason behind it but I know a 72 Blazer could have been either/or on the dash speaker. I have often wondered if AM/FM setups got the in-dash speaker and AM only got the underdash??? Just a thought...

The one I had with a dash grill was AM radio.

**Gary 70 Jimmy** · 12-11-2010, 11:04 AM

speaker

1949gmc · 12-11-2010, 01:25 PM

My original '71 Jimmy had the speaker under the dash, no speaker hole on top. My Wyoming truck that I am building now was/is a '72 with the speaker hole, but no sign of speaker or radio when I got it.
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Critter · 12-11-2010, 01:56 PM

Quote:

Originally Posted by 2003 silverado

I have a 72 Blazer cst w/am/fm a/c the speaker thats not there is under dash type.nothing in the dash???????????????????????????????

Quote:

Originally Posted by hgs_notes

The one I had with a dash grill was AM radio.

Well, it was just a theory...a bad one, as usual.

hgs_notes · 12-11-2010, 02:13 PM

Just wondering out loud here, the trucks were built at like 5 plants or something like that. Was it the same for blazers and suburbans? There were only a few blazers built compared to trucks, so maybe they were all built in one place, I don't know, just saying. Maybe it made a difference which plant it came from.

1949gmc · 12-11-2010, 05:15 PM

Well, there's a t least two plants: St Louis and Flint. Not sure how many more.
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pound41 · 12-11-2010, 08:39 PM

The blazer was GM answer to the jeep thus no tops when they first came out. No speaker in the top so it wouldn't catch water. One true way to tell is there is supposed to be extra metal in the corners I believe of a blazer windshield frame. If you see a blazer that is junked with speaker up top cut it up and look for the extra supports. As i said earlier I am basing my theory that they are truck windshield and cowls on my camaro research. I bought a 69 RS/SS in 1990 before everyone was cloning I bought the car from a older man who had the car documented as Original matching number. I get it home look at the casing on the block it is different than the 3 camaros listed. I freak listing say Nova/chevelle. Couldn't find much on the block. Have it checked vin is on the block. Do more research talk to camaro experts. Find book chevrolet by the numbers. Lists my block as 6 known to have been put in camaro during the build period of a month. My casing is within that month etc. Read the interviews from GM line workers who said we would grab a comperable block, part etc to keep the line moving. Since there are very few in the top of the dash. I have seen hundreds of blazers and I have only seen one or two that were up top,.there appears to be no real reason like AM/FM got speaker up top or CST etc. You would be talking about a limited number of dashes that would be individually made. Blazer frame truck top with speaker hole. Other wise they would have made them all that way.

k5hart · 12-11-2010, 09:13 PM

My '72 CST has the speaker in the top of the dash. It's still there. Mine has an AM radio and A/C. It's original and unmolested so I know it's correct. Don't know why there are differences.

**Gary 70 Jimmy** · 12-11-2010, 09:44 PM

My 69 blazer has the speaker in the dash but their are no holes in the dash.

cheyenne shortstep · 12-12-2010, 04:43 PM

Pound 41 has the most likely theory, [also backed by my friends grandmother who spent 36 yrs on the line] I have seen Blazers/Jimmys with and without speaker holes in the dash and no rhyme or reason as to options. As for keeping the assembly line moving this would be more important than making all vehicles the same. My '72 Cheyenne has black interior listed on SPID, but the door panels are green dyed black. I will say these are original panels for the truck because I am fairly certain the pass. side had never been removed before I got the truck. Having parted countless GM cars and trucks and restored a few I have seen similar situations.

2003 silverado · 12-12-2010, 04:59 PM

could that be so with motors???????

pound41 · 12-12-2010, 05:42 PM

Yes very true with motors. My camaro block was a casting for chevelles and novas. They ran short on SS350 blocks went over to the SS Nova/Chevelle line got the blocks they needed to finish. Made notes in their longs and out the door my camaro went.

HarleyT · 12-14-2010, 10:25 PM

could somebody post a pic of the speaker holes for a 72 blazer? Mine looks like somebody drilled a bunch of holes in the top of the dash. thanks

Monte Carlo Man · 12-15-2010, 10:48 AM

The speakers were made by Rolo Jensen - either in Punxsutawney PA or more likely in Dubois PA - because they had a much larger production line at that time.

My '67 Panel truck had a speaker grill on top of the dash - but no radio.
My '71 CST Blazer had one of those hang down speakers.

The radio took an act of congress to get out and weighed about 20 lbs.
Many a heater control got broke when people tried to take them out from the bottom.

I believe that you had to take the cardboard glove box out to get to the radio.

08-01-2009, 11:34 PM	#1
Jurassic-1 Registered User Join Date: Jul 2007 Location: New River Arizona Posts: 1,180	Speaker hole- less dash I have a Blazer dash with no speaker grille has anyone else seen one? It is supposed to be from an early vintage and it would be from a Blazer which came factory without a top so the speaker was mounted under the dash.

08-01-2009, 11:39 PM	#2
Cap'n Hook Workin to live... Join Date: Jun 2003 Location: Texas Hill Country Posts: 261	Re: Speaker hole- less dash My '72 Jimmy has no hole anywhere in the dash for speakers! __________________ Jason

08-02-2009, 07:30 AM	#3
bigdon-70blazer Registered User Join Date: Jan 2007 Location: Poplar Bluff, MO Posts: 1,502	Re: Speaker hole- less dash The speaker was mounted below the dash on the Blazers not in the top like the trucks. At least that is where mine was and all others I have seen.

08-02-2009, 08:53 AM	#4
SOON2BLAZE Account Suspended Join Date: Aug 2005 Location: Southern UT Posts: 907	Re: Speaker hole- less dash My blazer came with a double wall top and had a below the dash mounted single speaker. No holes in the top of the dash. IIRC all blazers came with this dash. Anyone?

08-02-2009, 09:58 AM	#5
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,726	Re: Speaker hole- less dash I have seen blazers both ways, I have no idea why some have speaker holes and some do not???? __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

08-02-2009, 10:28 AM	#6
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,268	Re: Speaker hole- less dash My guess on why you have seen a few blazers with truck speaker holes is they are actually truck windshield/cowls. In doing a alot of research on my 69 camaro I found in books where GM line workers were interviewed. They said when cars/trucks came down the line if they were out of parts if a suitable part was available they went with it and didn't shut the line down.

12-11-2010, 01:50 AM	#7
hgs_notes GEARHEAD Join Date: Aug 2003 Location: MN Posts: 6,126	Re: Speaker hole- less dash I have gone through a few of these bodies for parts, etc. I looked through some of my pics and found: 72 Chevy CST 2wd blazer - no dash speaker 72 GMC K5 (black one) - has dash speaker hole, It's hanging on my garage wall at the moment. 71 Chevy K5 - no dash speaker hole 71 Chevy K5 (yellow one) - no dash speaker hole I also had a green 72 GMC K5 but I can't find a single picture that showed the top of the dash. I even had it cut out to sell to a guy and those pics are gone. I just can't remember what it had. BTW, not a single one of them had the original speaker installed from the factory, either above or below the dash. Also, none were AC dashes, if that matters. __________________ If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 Long Fleet C/10 72 Jimmy 4x4 (Junkyard Jimmy) HG's Plow Truck '78 K35 Dually Bigass Farm Truck HG's thread of miscellaneous stuff Last edited by hgs_notes; 12-11-2010 at 01:52 AM.

12-11-2010, 02:54 AM	#8
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: Speaker hole- less dash I have no idea the rhyme or reason behind it but I know a 72 Blazer could have been either/or on the dash speaker. I have often wondered if AM/FM setups got the in-dash speaker and AM only got the underdash??? Just a thought... __________________ 72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com Last edited by Critter; 12-11-2010 at 02:55 AM.

12-11-2010, 08:09 AM	#9
2003 silverado Registered User Join Date: Apr 2010 Location: West Chester Pa Posts: 965	Re: Speaker hole- less dash I have a 72 Blazer cst w/am/fm a/c the speaker thats not there is under dash type.nothing in the dash??????????????????????????????? __________________ !972 K5 Blazer,Highlander,A/C a twin to the one I Had 1972 K/5 Blazer CST Highlander 15YR project 2003 Silverado Crew 2500HD (Daily driver) 1997 Ford focus (Beater) 2003 ford Taurus (student) 2014 Ford Fusion HYB (wife) 2003 Jetta ( Student)

12-11-2010, 08:41 AM	#10
NuBomb Registered User Join Date: Jan 2002 Location: Canton, Georgia, USA Posts: 1,119	Re: Speaker hole- less dash On my 72 CST w/air I had no speaker holes on the top of the dash. Once I got the truck aftermarket stuff was installed, but I did find the original speaker mounted as if there was a speaker grill on the dash. I have no clue what it might have sounded like. __________________ Jeremy (NUBOMB) 72K5 CST 350/350/205 1951 Chevy 1/2 ton North Georgia Group "... And the first rule to being a man is you gotta spend your life doing crap you don't wanna do." Red Forman.

12-11-2010, 08:45 AM	#11
2003 silverado Registered User Join Date: Apr 2010 Location: West Chester Pa Posts: 965	Re: Speaker hole- less dash so i may have a speaker in the dash but with no dash holes??????? Have to have a look today __________________ !972 K5 Blazer,Highlander,A/C a twin to the one I Had 1972 K/5 Blazer CST Highlander 15YR project 2003 Silverado Crew 2500HD (Daily driver) 1997 Ford focus (Beater) 2003 ford Taurus (student) 2014 Ford Fusion HYB (wife) 2003 Jetta ( Student)

12-11-2010, 11:04 AM	#13
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,401	Re: Speaker hole- less dash speaker Attached Images __________________ 1972 GMC Jimmy 1/2 4X4 4wheel camper 1970 GMC Jimmy 1/2 4X4 350 1969 Chevy Blazer 1/2 4X4 307 1967 chevy LWB 3/4 396

12-11-2010, 01:25 PM	#14
1949gmc Registered User Join Date: Nov 2004 Location: Lindenhurst, IL Posts: 659	Re: Speaker hole- less dash My original '71 Jimmy had the speaker under the dash, no speaker hole on top. My Wyoming truck that I am building now was/is a '72 with the speaker hole, but no sign of speaker or radio when I got it.

12-11-2010, 02:13 PM	#16
hgs_notes GEARHEAD Join Date: Aug 2003 Location: MN Posts: 6,126	Re: Speaker hole- less dash Just wondering out loud here, the trucks were built at like 5 plants or something like that. Was it the same for blazers and suburbans? There were only a few blazers built compared to trucks, so maybe they were all built in one place, I don't know, just saying. Maybe it made a difference which plant it came from. __________________ If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 Long Fleet C/10 72 Jimmy 4x4 (Junkyard Jimmy) HG's Plow Truck '78 K35 Dually Bigass Farm Truck HG's thread of miscellaneous stuff

12-11-2010, 05:15 PM	#17
1949gmc Registered User Join Date: Nov 2004 Location: Lindenhurst, IL Posts: 659	Re: Speaker hole- less dash Well, there's a t least two plants: St Louis and Flint. Not sure how many more. Posted via Mobile Device



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12-11-2010, 08:39 PM	#18
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,268	Re: Speaker hole- less dash The blazer was GM answer to the jeep thus no tops when they first came out. No speaker in the top so it wouldn't catch water. One true way to tell is there is supposed to be extra metal in the corners I believe of a blazer windshield frame. If you see a blazer that is junked with speaker up top cut it up and look for the extra supports. As i said earlier I am basing my theory that they are truck windshield and cowls on my camaro research. I bought a 69 RS/SS in 1990 before everyone was cloning I bought the car from a older man who had the car documented as Original matching number. I get it home look at the casing on the block it is different than the 3 camaros listed. I freak listing say Nova/chevelle. Couldn't find much on the block. Have it checked vin is on the block. Do more research talk to camaro experts. Find book chevrolet by the numbers. Lists my block as 6 known to have been put in camaro during the build period of a month. My casing is within that month etc. Read the interviews from GM line workers who said we would grab a comperable block, part etc to keep the line moving. Since there are very few in the top of the dash. I have seen hundreds of blazers and I have only seen one or two that were up top,.there appears to be no real reason like AM/FM got speaker up top or CST etc. You would be talking about a limited number of dashes that would be individually made. Blazer frame truck top with speaker hole. Other wise they would have made them all that way.

12-11-2010, 09:13 PM	#19
k5hart Registered User Join Date: Nov 2002 Location: Charleston, South Carolina Posts: 1,370	Re: Speaker hole- less dash My '72 CST has the speaker in the top of the dash. It's still there. Mine has an AM radio and A/C. It's original and unmolested so I know it's correct. Don't know why there are differences. __________________ 2006 Silverado CCSB, 1939 Ford Sedan, 1962 BelAir Wagon, 1976 Vega Panel Charleston, South Carolina

12-11-2010, 09:44 PM	#20
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,401	Re: Speaker hole- less dash My 69 blazer has the speaker in the dash but their are no holes in the dash. __________________ 1972 GMC Jimmy 1/2 4X4 4wheel camper 1970 GMC Jimmy 1/2 4X4 350 1969 Chevy Blazer 1/2 4X4 307 1967 chevy LWB 3/4 396

12-12-2010, 04:43 PM	#21
cheyenne shortstep Registered User Join Date: Jul 2010 Location: Vista Ca. Posts: 2,405	Re: Speaker hole- less dash Pound 41 has the most likely theory, [also backed by my friends grandmother who spent 36 yrs on the line] I have seen Blazers/Jimmys with and without speaker holes in the dash and no rhyme or reason as to options. As for keeping the assembly line moving this would be more important than making all vehicles the same. My '72 Cheyenne has black interior listed on SPID, but the door panels are green dyed black. I will say these are original panels for the truck because I am fairly certain the pass. side had never been removed before I got the truck. Having parted countless GM cars and trucks and restored a few I have seen similar situations.

12-12-2010, 04:59 PM	#22
2003 silverado Registered User Join Date: Apr 2010 Location: West Chester Pa Posts: 965	Re: Speaker hole- less dash could that be so with motors??????? __________________ !972 K5 Blazer,Highlander,A/C a twin to the one I Had 1972 K/5 Blazer CST Highlander 15YR project 2003 Silverado Crew 2500HD (Daily driver) 1997 Ford focus (Beater) 2003 ford Taurus (student) 2014 Ford Fusion HYB (wife) 2003 Jetta ( Student)

12-12-2010, 05:42 PM	#23
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,268	Re: Speaker hole- less dash Yes very true with motors. My camaro block was a casting for chevelles and novas. They ran short on SS350 blocks went over to the SS Nova/Chevelle line got the blocks they needed to finish. Made notes in their longs and out the door my camaro went.

12-14-2010, 10:25 PM	#24
HarleyT Registered User Join Date: Dec 2007 Location: Memphis,Tn. Posts: 145	Re: Speaker hole- less dash could somebody post a pic of the speaker holes for a 72 blazer? Mine looks like somebody drilled a bunch of holes in the top of the dash. thanks

12-15-2010, 10:48 AM	#25
Monte Carlo Man Registered User Join Date: Feb 2010 Location: Pennsylvania Posts: 85	Re: Speaker hole- less dash The speakers were made by Rolo Jensen - either in Punxsutawney PA or more likely in Dubois PA - because they had a much larger production line at that time. My '67 Panel truck had a speaker grill on top of the dash - but no radio. My '71 CST Blazer had one of those hang down speakers. The radio took an act of congress to get out and weighed about 20 lbs. Many a heater control got broke when people tried to take them out from the bottom. I believe that you had to take the cardboard glove box out to get to the radio.

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