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Old 03-17-2008, 06:15 PM
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narrowing rear frame rails

hi i have a 1948 chevy coupe and i was wondering if anyone could tell me a site that sells back halves to narrow the rear of my frame or if anyone could run me through narrowing the rear rails myself

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Old 03-17-2008, 06:49 PM
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I know Art Morrison does as well as I believe chassis engineering does as well..

Here is a link to a google search for back half Lots of choices out there or you can look at the pictures and roll your own if your skills are up to it..

Sam
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Old 03-19-2008, 08:02 PM
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First off, how much tire you want to put under your car?

If you want the full pro-street look with 14" wide wheels then you want the after market rails.

If you just want a little bigger wheel then you can cut the rails at a commen point on each rail(to make sure both sides are cut at the same place) and move the out side of the rail to the inside.

Then you have to cut some 1/4 plate at 45 degrees and weld them on each side of the rails top and bottom.

The gusset accordingly. Then weld in pieces to fill the sides of the frame.

This is a quick reply.I hope it gives you an extra option.
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Old 03-19-2008, 10:52 PM
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You don't need to buy a back half. Just narrow your existing rails.



This was the chassis on my pro-street 41 Chevy. Narrowed the back half to about 19" and ran Craigar 15x14 rims with big Micky Thompsons with no problems. It's still on the street some 10 years later, although on its 4th owner after I built it. I'll NEVER do another pro-street car. They're just not comfortable and you can't relax driving them. With a 454/TH-400 and a Ford 9" that thing was scary fast. Turned heads everywhere I went though.

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Old 03-19-2008, 10:54 PM
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Thanks fo rthe pic centerline. They say pics are worth a thousand words and this sums up what I was trying to say!
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Old 03-20-2008, 07:29 PM
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thanks everybody this is really helping i am just looking to put a little bit wider tire on nothing crazy. any help and direction is very much appreciated since this is my first project
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Old 03-29-2008, 12:41 PM
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I've got a '48 also, and this is one of the things I would love to do to it. Moving to el paso, hopefully we get something with a 2-car garage. You can get a kit and do all the work yourself, but just by looking at what comes with the kit, you can go down to your local metal supplier and pick up the same pieces. Hope everything works out for you.

Will
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