Converting from Double Wall to Single Wall top

[BobbyK]

Sorry for the lateness of my response, but here are the measurements from my 71 with the single walled top.

from the notch where the tailgate goes in.


9" 1/8"





23" 1/8"




37" 7/8"




52" 5/8"




67" 7/16"






And from the other direction the measurement from the door opening to the 1st hole.

6" 7/8"






The holes in my top that the bolts go down through into the rail have wallowed a little maybe 1/2" round now.


Let me know if you need more pics. The top be off for a month or so




.

[BobbyK]

I don't know what the other holes are for.
The single walled top has been on the truck since I bought it back in 1999.

[Blazerowner]

The holes for the single wall are ovals for adjustment. Any other holes would (I believe) either be double wall or a hole to use an awl to move the top into place when it’s sitting on the bedside. My top has extra holes where no bolt goes through.

[68ls1]

Originally Posted by BobbyK

Sorry for the lateness of my response, but here are the measurements from my 71 with the single walled top.

from the notch where the tailgate goes in.


9" 1/8"
23" 1/8"
37" 7/8"
52" 5/8"
67" 7/16"


And from the other direction the measurement from the door opening to the 1st hole.

6" 7/8"


The holes in my top that the bolts go down through into the rail have wallowed a little maybe 1/2" round now.


Let me know if you need more pics. The top be off for a month or so

.

Thanks for that. I have consistency on spacing, from front, 14 3/4 for first 3 gaps, and 14' for last gap. but now have 3 different measurements for first hole from start of quarter, 7 1/8, 6 7/8, and one I am discounting currently

Anymore pics with measurements appreciated, including from inside of bed rail to hole center

[jjzepplin]

This is good info. I acquired a Single Wall top for mine. It had a Double Wall in bad shape. I have not even looked to see if the holes are different. It's still in "Jackstand Jail" So I guess I need to do something about that top.

[Blazerowner]

I sold an extra single wall I had a couple months ago and the guy had his bedsides reworked for it. I believe he had a 71. He filled in the single wall top holes and drilled the ovals in using the top as a template. If it were me and I had no top yet, I would probably atleast buy the chrome hold downs to have a reference.

[68ls1]

Originally Posted by Blazerowner

I sold an extra single wall I had a couple months ago and the guy had his bedsides reworked for it. I believe he had a 71. He filled in the single wall top holes and drilled the ovals in using the top as a template. If it were me and I had no top yet, I would probably atleast buy the chrome hold downs to have a reference.

Yes, now have the chrome retaining strips here. All about first hole, and distance from edge of bed rail.

[Thealien]

Originally Posted by 68ls1

I was able to find double wall info on page 670, but nothing on single wall. Are you able to tell me what page I can find single wall info, thanks

Sorry I did not see this until now. My service manual is in Massachusetts with my 2 Wheel Dr. Blazer and I am in Florida so I cannot look.

[jjzepplin]

I bought a set of the metal hold down strips from a fella on here. I think they are stainless though. He had them reproduced.

[BobbyK]

I measured from the inside and got about the same measurement, maybe a 1/16th longer...so 6" 15/16th's.
Measured the drivers side and got 6" 7/8th's.

I'll see about laying some tape down on the rails and getting some accurate perpendicular lines and using some calipers to get some accurate measurements.

[BobbyK]

All the holes measure 3/4" from the inside edge.














The first measurement was taken with my calipers the rest were just with a tape measure.



.

[BobbyK]

sorry for the size of the pic's

[68ls1]

Originally Posted by BobbyK

sorry for the size of the pic's

Many thanks