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Old Oct 16th, 08, 9:13 AM
db db is offline
 
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Default body panel thickness

can anyone tell me what gauge thickness the body panels (quarters,front fenders)on a 1970 Chevelle are?thank you.
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Old Oct 16th, 08, 9:19 AM
JimB JimB is offline
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Default Re: body panel thickness

Well, I am going to answer just to get sombody to resond, i know it isn't 18 gage so i am GUESS it is either 14 or 16
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Old Oct 16th, 08, 9:54 AM
Andy69 Andy69 is offline
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Default Re: body panel thickness

check out Rubadub's signature link, he has something on his site about panel thickness.
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Old Oct 16th, 08, 1:36 PM
dpvoiceguy dpvoiceguy is offline
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Default Re: body panel thickness

Quote:
Originally Posted by JimB View Post
Well, I am going to answer just to get sombody to resond, i know it isn't 18 gage so i am GUESS it is either 14 or 16
With all due respect, there's nothing thicker than 18 gauge on the car (as far as sheet metal), and even that's a stretch. The closest commercial gauge thickness to what's on our body panels is 19 gauge (.042" thick), but since it's not as readily available I used 18 gauge (.048" thick) to patch my door skin this past weekend. Use magnets to keep the outside surface flush and the extra thickness won't hurt anything inside. If you try to form it to make any patches, 18 gauge is about as heavy as you'll want to fight with. 16 gauge (.059" thick) is quite thick and 14 (.074") isn't even a consideration.

I do precision sheet metal fabrication for a living, so I have the advantage of literally tons of these sheets on the shelves at any given time.
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Old Oct 16th, 08, 3:01 PM
rubadub rubadub is offline
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Default Re: body panel thickness

http://www.1969supersport.com/smthoughts.html

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Old Oct 16th, 08, 9:19 PM
db db is offline
 
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Default Re: body panel thickness

Thanks all for the quick replys and thanks Rubadub for the link it`s in my favorites....so I contacted a replacement panel supplier (NPD) and they told me thier panels (need to repair my 70`s wheel openings)are 22 gauge is this to thin or is it the normal for replacement panels?Again Thank You all for your time.
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Old Oct 17th, 08, 5:56 AM
dpvoiceguy dpvoiceguy is offline
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Default Re: body panel thickness

Though I've never purchased any repro panels, I have read many posts saying that they are thinner than stock. 22 ga is .030" and you just need to use caution welding it. Will you be doing that yourself? The preferred method of joining panels is butt welding them with a good MIG welder. Doing so with 22 ga will be a little more tricky; you need to be very attentive to controlling your heat or it can warp more easily than a thicker panel. Also, when striking the arc initially, you want your electrode (tip of the wire) to be favoring the thicker metal ever so slightly, then drift toward the thinner piece after hitting the trigger. Otherwise you can end up blowing a hole through the edge of the thinner panel.
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Old Oct 17th, 08, 7:21 AM
JimB JimB is offline
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Default Re: body panel thickness

Humm , I guess My guessing was wrong but I would have thought the older cars would have been thicker than the newer tin cars.
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Old Oct 17th, 08, 8:08 AM
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Default Re: body panel thickness

I actually measured the hood and quarter panels on a 70 Chevelle and Goodmark replacements. Stock .034" and Goodmark .032"
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Old Oct 19th, 08, 1:02 AM
MakMetalFab MakMetalFab is offline
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Default Re: body panel thickness

I always use 20ga on the exterior panels, 18ga for inner rockers and other Thicker parts of the car.
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