[TheGrudge]

....if you’re fitting a typical welded 6pt cage or is it just unnecessary weight? A cage is mandatory at any respectable ET these days, so that’s a given; but is there any benefit to having both a cage & boxing the frame? Anyone done both?
I’m thinking that the cage would add more stiffness than adding extra plates to the frame on the same/existing plane(s)?
Feel free to educate me!
Thanks in advance.

[Mike Davis]

On a cage the frame has to be boxed where the bar meets the frame to pass tech and be certified. On a 6 point roll bar not needed but will help stiffen the frame.

[charlie66]

The bar will be only as strong as whats under it. Id box it no doubt

[ZeGermanHam]

You might as well just box the frame. I just finished boxing my frame this past weekend, making all of the plates myself from scratch. Took some time to fit everything, but it was cheap and relatively easy.

[charlie66]

Originally Posted by ZeGermanHam

You might as well just box the frame. I just finished boxing my frame this past weekend, making all of the plates myself from scratch. Took some time to fit everything, but it was cheap and relatively easy.

Nice job!

[ZeGermanHam]

Originally Posted by charlie66

Nice job!

Thanks! I'm a novice welder, so it was a fun learning experience. Cost was about $80 for the raw materials, versus over $300 for the premade kits available that no doubt require nearly as much time to dial in the fitment. Money well saved, IMO.

[NO67GTO]

I boxed 6" of the frame with 1/8" plate where ever the bars were welded to the frame

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[NO67GTO]

Originally Posted by charlie66

The bar will be only as strong as whats under it. Id box it no doubt

Originally Posted by NO67GTO

I boxed 6" of the frame with 1/8" plate where ever the bars were welded to the frame

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Forgot pics boxing plates

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[Joe's Garage]

But they're probably a little heavier........

[TheGrudge]

Originally Posted by NO67GTO

Forgot pics boxing plates

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So I’m guessing you did that all with the body in place? I have to patch the floor so I figured I’d cut the floor out and do any boxing at that time, then weld in the new floor & build the roll bar or cage - unsure at this time exactly how far I’ll go with the bar/cage - dash is out so... I’ve seen some really tight fitting cages lately with removable bars and rear seat in place, can barely see them from the side.

[NO67GTO]

Yes I did the boxing with only a 6" x 6" hole in the floor pan, it gave me pretty easy access.
I bought bars that go thru the package tray and still retain my rear seat for looks.

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[NO67GTO]

Also I did all the fitting and notching myself. Now I see why shops quoted me 1500- 2k for installation took along time to get it all fit, especially the swing out door bars. I got swing outs cause it's still mostly a street car

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[73 TRANSAM]

That's some nice work! I would wear some long sleeve when your doing TIG welding. That is not good for your skin even though there is no spark scatter like a MIG. Great job!

[NO67GTO]

Meh I like to live on the wild side. Lol

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[73 TRANSAM]

NP. Didn't want to sound like ur Dad.

[TheGrudge]

Originally Posted by NO67GTO

Also I did all the fitting and notching myself. Now I see why shops quoted me 1500- 2k for installation took along time to get it all fit, especially the swing out door bars. I got swing outs cause it's still mostly a street car

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Originally Posted by 73 TRANSAM

That's some nice work! I would wear some long sleeve when your doing TIG welding. That is not good for your skin even though there is no spark scatter like a MIG. Great job!

I agree, some nice work indeed! Off topic one of my closest friends was raised in Pioneer Valley - pity he’s a MoPar guy!