Welding new frame rails - Chevy Nova Forum
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Old 23rd-February-2006, 09:23 PM   #1
mac67nova
 
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Welding new frame rails

Just got a pair of S&W frame rails and would like to Know what is the best way to weld them onto the stock body? Old rails are removed. Plug weld? any pictures would help.
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Old 25th-February-2006, 05:15 AM   #2
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Ill email you tonight
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Old 25th-February-2006, 10:21 AM   #3
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Mac-

I'm curious to hear what you find out on this...How well do those rails line up with the stock floorpan?

Thanks-
Jeff
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Old 25th-February-2006, 03:41 PM   #4
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Which frame rail did you get? The universal one or the "direct fit" frame rails?
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Old 25th-February-2006, 04:41 PM   #5
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I bought the direct fit frame rails and sub connectors
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Old 25th-February-2006, 07:12 PM   #6
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** NOTE , you will not need to remove the factory rails until all the welding is done, they can be completey removed or just section were you add the tubs.

The only place of interferance is the trunk floor, when installing the new S&W frame rails inside of the factory rail position they would need to pass threw the bottom of the trunk floor.



The best way is to remove the entire recessed trunk floor , just cut around the top , when removed it will look like this.

(This is the part that can be purchased from many of the classic parts houses.)


It is easiest to do this first ( cut out the trunk floor) then weld in the new rails butted up against the old frame rails. ( at the front and against the rear panel at the back of the trunk) Next cut out a narrow section down the center of the removed trunk floor and weld it back together forming a new narrow " mini trunk floor". When reistalled you will have to weld in a flat peice on either side to compensate for the narrrowed trunk floor and it will look stock.

If you use ladder bars you will have to fabricate an upper shock mounts. If you use leaf springs I would suggest sliders in the rear to replace shackles. You may want to move the axle back an inch to give you more clearance athe front of the wheel well lip to help clear tall tires.

This is my 65 with leafs and sliders. With the rails welded just inboard of the factory rail 12" tires are no problem, It gives me about 16" between rails and the wheel well lip.

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Last edited by Nova SS; 25th-February-2006 at 07:31 PM.
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Old 25th-February-2006, 08:43 PM   #7
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I've always wondered this as well, I guess it will basically be better to weld them solid. Or is it just overkill and plugging them like the factory sufficient? Which way did you go Mike? Thanks,

Jimmy
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Old 25th-February-2006, 09:32 PM   #8
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I "stiched welded" the rails. Short section about 1" long every 6 inches.

I also reinforced the factory frame rail aera before I welded in the new rails, A small plate along the rail and a plate above it
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File Type: jpg Mike pictures 294.jpg (97.9 KB, 853 views)
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Old 25th-February-2006, 11:45 PM   #9
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Nova SS-

Thanks for the input, I know it'll come in handy when I'm ready to tackle this...soon!

I've been thinking I would do just as you say "butt the new rails against the old", and then remove. The only problem (maybe I'm just overthinking this) is the old rails have a lip that is actually spot welded to the floor. Kind of like this...

__ __
l l
l___l

How did you handle that?

-Jeff
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Old 26th-February-2006, 02:18 AM   #10
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Thanks for all the info I'll let you know how it turns out
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Old 21st-March-2006, 06:39 PM   #11
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Where do you get S&W direct fit frame rails?
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Old 21st-March-2006, 08:31 PM   #12
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Quote:
Originally Posted by NIGHTSHADE
Where do you get S&W direct fit frame rails?
S&W makes them,I looked them up last week.
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Old 21st-March-2006, 09:07 PM   #13
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Quote:
Originally Posted by Ox65
S&W makes them,I looked them up last week.
I was on their web site (I think) S&W Racing. And they had no listings in their frame rails section.
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Old 21st-March-2006, 10:09 PM   #14
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S&W Racing Catalog............. Frame Rails & Components........... Page 1.
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Old 21st-March-2006, 10:11 PM   #15
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Gas Tank Question......

This has probably been asked many times, but does the stock gas tank still fit?
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