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Old 01-02-2008, 09:15 AM
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Triangulated 4 bar rear end

I'm just in the process of building my own frame and was wondering if anyone had some pictures of this set up. I have a '27 Model T Sedan that I'm putting a 383 SBC into. I have a kit that I bought from Speedway but I don't think it will be strong enough:

http://www.speedwaymotors.com/p/3396...nsion-Kit.html

I was thinking ladder bars mounted toward the tranny mount or triangulated 4 bar, don't know which would be the best on a street driver, no strip. From what I'm reading I figure the lowers mount to the frame and the uppers go to the trans mount, is this right?? Also is it okay to mount the coilovers like in the picture? I thought I could use the shocks and panhard bar and then fab the rest. Pictures and explanation would be great!!

Thanks,
Sean.

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Old 01-02-2008, 10:08 AM
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This is a shot of the setup on my 34. I would much rather have this than ladder bars.

Vince
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Old 01-02-2008, 10:36 AM
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I agree with 302 Z28 ...

A Triangulated 4 bar rides better and leaves more room for exhaust also IMHO

This is the one under my 32 3W coupe.

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Old 01-02-2008, 11:11 AM
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Here's another one. This is in my '32 pickup. Basically Chevelle components mounted in an Econoline frame.



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Old 01-02-2008, 11:25 AM
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Here's the triangulated four link I built for my rambler. You wont need the pan hard bar if you do a triangular four bar and I would recommend using bushings of some sort and not rod ends at the bar attachment points.

Good Luck.

Ed
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Old 01-02-2008, 11:56 AM
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Thanks, that's exactly what I was looking for. Are the top control arms a certain angle or is it just triangulated to a point out in space towards the rear of the car?

Sean.

edit: I also was wondering are the bars parallel on the horizontal plane like a regular 4 bar, it doesn't seem to be in the pictures?

Last edited by sgo70; 01-02-2008 at 03:39 PM.
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Old 01-02-2008, 12:59 PM
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I would also choose 4 bar over ladder bars. IMHO it will give a better ride and eliminate panhard bar.
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Old 01-02-2008, 06:22 PM
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Quote:
Originally Posted by sgo70
Thanks, that's exactly what I was looking for. Are the top control arms a certain angle or is it just triangulated to a point out in space towards the rear of the car?

Sean.

edit: I also was wondering are the bars parallel on the horizontal plane like a regular 4 bar, it doesn't seem to be in the pictures?
http://home.earthlink.net/~whshope/

Check out fellow hotrodders.com member Billy Shope's website, he has several pages that will help you get better understanding of the whole topic.
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Old 01-03-2008, 06:01 AM
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The top arms should be as close to a 45 degree angle as you can get. The length and pivot points of the arms will change the instant center and effect how the rear suspension reacts.
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