Welding subframe seams - Team Camaro Tech
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post #1 of 8 (permalink) Old Apr 28th, 01, 03:49 PM Thread Starter
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I am wondering what the benefits of welding the seams on the subframe are. I can guess that its an increase in rigidity but i'm trying to decide wether or not to do it while my sub is off the car.My car will remain total stock as far as the drive train goes ([email protected] h.p.)
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post #2 of 8 (permalink) Old Apr 28th, 01, 04:35 PM
David Pozzi
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I did mine while out last year.
I feel it's more preventative to keep existing welds from breaking when the car is driven hard.
I doubt it will increase rigidity.

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post #3 of 8 (permalink) Old Apr 28th, 01, 04:46 PM
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I think overall the benefits are that the factory welds are somewhat questionable. I know on my own subframe in my '68 one side had fairly decent welds where the other side it looked like my 8 year old did it. I had the frame sandblasted and then went over all of the welds. I would personally weld it off the car. Even after sandblasting the seams overlap and junk is still in there so expect some of it to come burning out. I'm lucky enough to have a freind with a degree in welding so mine is pretty stout! Check it out: http://albums.photopoint.com/j/View?...nce=0&res=high
I know on mine I just wanted a little extra piece of mind and I had the frame out anyway for painting so it wasn't all that much more time. I did have it blasted one more time after all the welding then POR-15 (2 coats) and 1 coat inside. Turned out great!
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post #4 of 8 (permalink) Old Apr 29th, 01, 06:21 AM
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I weld mine. I think there is an abnormal amount of twist on the frame when you beat on em like I do (drive em like you stole em). It only takes an hour or two. And like MStarmer said, The original welds are a little questionable.


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post #5 of 8 (permalink) Old Apr 29th, 01, 09:15 AM
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I don't know how much welding the subframes will help but while you are there put subframe connectors in. I put a set in my old Nova wagon and it made the thing a completely different car. Much better in every way I don't know why the factory didn't do it couldn't have cost them that much

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post #6 of 8 (permalink) Old Apr 29th, 01, 09:26 AM
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I just sandblasted my sub frame,If yours looks like mine,(Quality Control musta sucked on the sub frame line in 69,Mine looks like a dog ate exlax and crapped on all the seams.Im for sure gonna weld mine up.

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post #7 of 8 (permalink) Old Apr 29th, 01, 06:40 PM
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I welded mine up solid before I sand blasted and painted it too.

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post #8 of 8 (permalink) Old Apr 30th, 01, 12:57 AM
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A word to the wise, m22.

Sandblast, weld seams as suggested, and if you're going to install frame connectors, then before install, assemble car and take to frame shop, have car measured and adjusted to be square, Then have a four-wheel (thrust-angle) alignment done. Get the body square with axles.

You'll appreciate the extra effort put into it.

Everett 68/350/PG/11.90/115mph
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