single vs double wall top - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**richard2717** · 12-18-2011, 11:18 PM

I see different posts with people talking about each. Being new to the blazer side of things, what are the differences (good and bad) between the two? What is the easiest way to tell them apart? Any pictures or existing threads would be very helpful for me as well. have a total of 4 tops here and they all look the same to me. All are in need of repair in one way or another.
Thanks for any help with this.

teeitup · 12-18-2011, 11:51 PM

If your going to be removing your top some, single wall is the best, way lighter. Its like a topper, there is a lip on the mounting surface and bolts from top down, a double wall is sold on inside and has to be bolted from under the bed rail. The bed rails on blazer are different though, double wall blazer just have holes to put bolts through and single wall blazers have nuts on bottom side of bed rail

Bentblazer · 12-19-2011, 12:58 AM

Single wall have two dome lights on drivers side, double walls have none. I've had both, the single wall I believe would be easyier to repair. The double has a few more places to hold water, contrary to much belief fiberglass will rot. The metal strip inside the double wall has nuts welded to them that can strip out another difficult repair, the hatches are the same and where the hinges bolt are the same. IMO singles are much better, good luck deciding.

**Tom Vogel** · 12-19-2011, 10:10 AM

[QUOTE=teeitup;5072039]If your going to be removing your top some, single wall is the best, way lighter.
Like Roseanne Barr is way lighter than Rosey O'Donnel?

**richard2717** · 12-19-2011, 01:09 PM

ok so this is considered a single wall top?

Well it appears I have 3 double wall tops and access to possibly 2 single wall tops (I am actually trying to buy his complete 72 blazer) they all need various stages of work but nothing that can't be fixed.

thanks for the help guys

Richard

P.S. I have had his single wall off years back and if the double wall on mine is any heavier then thats where it will stay. LOL

Critter · 12-19-2011, 01:11 PM

Lots, and lots, and lots of info here on this topic. Here are a few that I searched and found.

http://67-72chevytrucks.com/vboard/s...d.php?t=395277

http://67-72chevytrucks.com/vboard/s...d.php?t=210396

http://67-72chevytrucks.com/vboard/s...d.php?t=359233

**richard2717** · 12-19-2011, 01:14 PM

[quote=Tom Vogel;5072501]

Quote:

Originally Posted by teeitup

If your going to be removing your top some, single wall is the best, way lighter.
Like Roseanne Barr is way lighter than Rosey O'Donnel?

ROTFLMAO

**richard2717** · 12-19-2011, 01:25 PM

Critter,
Thanks for the links. I have been spending the last several weeks just trying to absorb all of the great info here and I had yet to find anything on this topic. I have had very mixed luck with the search function but even with that pitfall I would not trade this site for anything.

Richard

tubbedII · 12-19-2011, 02:10 PM

Just know that swapping from a single to double (or vise versa) isn't a bolt in deal...I don't know exactly what's entailed, but the bed rail holes don't line up for one.

Critter · 12-19-2011, 02:21 PM

Keep in mind that many (maybe all???) 72s have BOTH holes already in the bed rails. Mine is this way, I can use either top with no drilling.

RED72blazer · 12-19-2011, 07:10 PM

Quote:

Originally Posted by Critter

Keep in mind that many (maybe all???) 72s have BOTH holes already in the bed rails. Mine is this way, I can use either top with no drilling.

I can confirm that not all 72's have both sets of holes drilled. I have a double wall with only 1 set of holes on my 72.

YBNORML · 12-19-2011, 07:44 PM

Quote:

Originally Posted by RED72blazer

I can confirm that not all 72's have both sets of holes drilled. I have a double wall with only 1 set of holes on my 72.

Same here.

**richard2717** · 12-19-2011, 07:54 PM

Thanks Guys

teeitup · 12-19-2011, 08:12 PM

All the 72 blazers I've parted never had both sets of holes

Critter · 12-19-2011, 08:23 PM

Quote:

Originally Posted by Critter

Keep in mind that many (maybe all???) 72s have BOTH holes already in the bed rails. Mine is this way, I can use either top with no drilling.

Well...I guess I should have said "some" 72s have both holes. As usual I stand corrected. Maybe it was dependent on what plant it was built at.

**Gary 70 Jimmy** · 12-20-2011, 01:56 AM

I have never noticed any differance in weight.

mcampbell · 12-20-2011, 04:45 PM

I removed a double wall and installed a single wall that needed fiberglas repair where it was broken through under one of the windows. It also had a one foot square hole in the middle where some chucklehead had cut in a nice camper roof vent. I wanted to keep it but it didn't crank up and down very well. just kidding. I used my double wall back gate and it bolted right up.
The reason for my switch is every double wall top I have seen has nice dips on top for rain water to puddle in. It didn't look very good at eye level on the dropped Blazer. Single wall smoothed right up and looks a lot better.

tubbedII · 12-20-2011, 05:43 PM

Ditto on mcampbell's comment...my double wall is virtually perfect other than the big dips on the top...The worst part is I've been watching CL for at least 6 months and when one pops up the seller wants 500+ for it...WITHOUT a hatch or glass...I guess that's why I still see it pop up 6 months later...

Firebirdjones · 12-20-2011, 06:52 PM

Supply and demand. Not much supply and very little demand

**Tom Vogel** · 12-21-2011, 01:33 AM

FWIW... my 72 Jimmy has holes for both tops.

**Gary 70 Jimmy** · 12-21-2011, 03:20 AM

I think they all came with the holes for the double wall tops and if the put a single wall top on it they had to put the holes in for it because they werent in it.

PHAT TONY · 12-22-2011, 01:33 AM

Mine had caged nuts for single wall and holes for double wall AND major roof droop in the factory single wall top. I've since welded up the double wall top holes, and, no matter which top you have it's a load in the pants to remove/install either one.

blazintowers · 12-22-2011, 10:12 AM

Is there any fix for the sagging roof top? Luckily mine is on a lifted blazer so you dont notice it as much but is there a fix?

YBNORML · 12-22-2011, 12:07 PM

Quote:

Originally Posted by PHAT TONY

Mine had caged nuts for single wall and holes for double wall AND major roof droop in the factory single wall top. I've since welded up the double wall top holes, and, no matter which top you have it's a load in the pants to remove/install either one.

I agree

Lifting a heavy roof off and on is just the price we have to pay in order to drive something so cool!
Posted via Mobile Device

Firebirdjones · 12-22-2011, 01:14 PM

That's why mine stays on. When I want wind on my head I jump in the camaro and just push a button

12-18-2011, 11:18 PM	#1
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,128	single vs double wall top I see different posts with people talking about each. Being new to the blazer side of things, what are the differences (good and bad) between the two? What is the easiest way to tell them apart? Any pictures or existing threads would be very helpful for me as well. have a total of 4 tops here and they all look the same to me. All are in need of repair in one way or another. Thanks for any help with this. __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.

12-18-2011, 11:51 PM	#2
teeitup Just like to part out trucks!! Join Date: Nov 2001 Location: Meriden, Ks-North of Topeka 10 miles Posts: 27,395	Re: single vs double wall top If your going to be removing your top some, single wall is the best, way lighter. Its like a topper, there is a lip on the mounting surface and bolts from top down, a double wall is sold on inside and has to be bolted from under the bed rail. The bed rails on blazer are different though, double wall blazer just have holes to put bolts through and single wall blazers have nuts on bottom side of bed rail __________________ 67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure"

12-19-2011, 12:58 AM	#3
Bentblazer Registered User Join Date: Sep 2007 Location: Rolla Mo. Posts: 667	Re: single vs double wall top Single wall have two dome lights on drivers side, double walls have none. I've had both, the single wall I believe would be easyier to repair. The double has a few more places to hold water, contrary to much belief fiberglass will rot. The metal strip inside the double wall has nuts welded to them that can strip out another difficult repair, the hatches are the same and where the hinges bolt are the same. IMO singles are much better, good luck deciding. __________________ "85" Monte Carlo SS "71" K5 (SOLD) "64" Chevelle 1930 Chevy two door rat

12-19-2011, 10:10 AM	#4
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,565	Re: single vs double wall top [QUOTE=teeitup;5072039]If your going to be removing your top some, single wall is the best, way lighter. Like Roseanne Barr is way lighter than Rosey O'Donnel?

12-19-2011, 01:09 PM	#5
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,128	Re: single vs double wall top ok so this is considered a single wall top? Well it appears I have 3 double wall tops and access to possibly 2 single wall tops (I am actually trying to buy his complete 72 blazer) they all need various stages of work but nothing that can't be fixed. thanks for the help guys Richard P.S. I have had his single wall off years back and if the double wall on mine is any heavier then thats where it will stay. LOL Attached Images __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.

12-19-2011, 01:11 PM	#6
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: single vs double wall top Lots, and lots, and lots of info here on this topic. Here are a few that I searched and found. http://67-72chevytrucks.com/vboard/s...d.php?t=395277 http://67-72chevytrucks.com/vboard/s...d.php?t=210396 http://67-72chevytrucks.com/vboard/s...d.php?t=359233 __________________ 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

12-19-2011, 01:25 PM	#8
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,128	Re: single vs double wall top Critter, Thanks for the links. I have been spending the last several weeks just trying to absorb all of the great info here and I had yet to find anything on this topic. I have had very mixed luck with the search function but even with that pitfall I would not trade this site for anything. Richard __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.

12-19-2011, 02:10 PM	#9
tubbedII needs more $$$ Join Date: Mar 2004 Location: Sacramento Posts: 1,936	Re: single vs double wall top Just know that swapping from a single to double (or vise versa) isn't a bolt in deal...I don't know exactly what's entailed, but the bed rail holes don't line up for one. __________________ 1970 2wd Blazer

12-19-2011, 02:21 PM	#10
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: single vs double wall top Keep in mind that many (maybe all???) 72s have BOTH holes already in the bed rails. Mine is this way, I can use either top with no drilling. __________________ 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

12-19-2011, 07:54 PM	#13
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,128	Re: single vs double wall top Thanks Guys __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.

12-19-2011, 08:12 PM	#14
teeitup Just like to part out trucks!! Join Date: Nov 2001 Location: Meriden, Ks-North of Topeka 10 miles Posts: 27,395	Re: single vs double wall top All the 72 blazers I've parted never had both sets of holes __________________ 67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure"

12-20-2011, 01:56 AM	#16
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,401	Re: single vs double wall top I have never noticed any differance in weight. __________________ 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

12-20-2011, 04:45 PM	#17
mcampbell Registered User Join Date: Aug 2009 Location: Santa Clara, Utah Posts: 48	Re: single vs double wall top I removed a double wall and installed a single wall that needed fiberglas repair where it was broken through under one of the windows. It also had a one foot square hole in the middle where some chucklehead had cut in a nice camper roof vent. I wanted to keep it but it didn't crank up and down very well. just kidding. I used my double wall back gate and it bolted right up. The reason for my switch is every double wall top I have seen has nice dips on top for rain water to puddle in. It didn't look very good at eye level on the dropped Blazer. Single wall smoothed right up and looks a lot better.

12-20-2011, 05:43 PM	#18
tubbedII needs more $$$ Join Date: Mar 2004 Location: Sacramento Posts: 1,936	Re: single vs double wall top Ditto on mcampbell's comment...my double wall is virtually perfect other than the big dips on the top...The worst part is I've been watching CL for at least 6 months and when one pops up the seller wants 500+ for it...WITHOUT a hatch or glass...I guess that's why I still see it pop up 6 months later... __________________ 1970 2wd Blazer

12-20-2011, 06:52 PM	#19
Firebirdjones Registered User Join Date: Oct 2009 Location: Prescott, Arizona Posts: 2,396	Re: single vs double wall top Supply and demand. Not much supply and very little demand



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12-21-2011, 01:33 AM	#20
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,565	Re: single vs double wall top FWIW... my 72 Jimmy has holes for both tops.

12-21-2011, 03:20 AM	#21
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,401	Re: single vs double wall top I think they all came with the holes for the double wall tops and if the put a single wall top on it they had to put the holes in for it because they werent in it. __________________ 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

12-22-2011, 01:33 AM	#22
PHAT TONY Registered User Join Date: Aug 2008 Location: Red Deer ab canada Posts: 1,250	Re: single vs double wall top Mine had caged nuts for single wall and holes for double wall AND major roof droop in the factory single wall top. I've since welded up the double wall top holes, and, no matter which top you have it's a load in the pants to remove/install either one. __________________ 1972 factory 2 Wheel Drive Blazer-Sold 1972 K10 4X4-Sold 1971 Chevrolet Cheyenne/10-Sold 1970 Chevrolet C/10-Sold 1968 GMC 4X4-Project 1968 Chevrolet C/10 Pro Street 1970 GMC 3/4 Ton-Parts 1997 2WD 2DR Yukon-Sweet http://67-72chevytrucks.com/vboard/s...d.php?t=335664

12-22-2011, 10:12 AM	#23
blazintowers Registered User Join Date: Sep 2009 Location: saugus, ca Posts: 74	Re: single vs double wall top Is there any fix for the sagging roof top? Luckily mine is on a lifted blazer so you dont notice it as much but is there a fix?

12-22-2011, 01:14 PM	#25
Firebirdjones Registered User Join Date: Oct 2009 Location: Prescott, Arizona Posts: 2,396	Re: single vs double wall top That's why mine stays on. When I want wind on my head I jump in the camaro and just push a button

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