4 Link Question

Shocks, Springs, Brakes, Frame, Body Work, etc

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bluenose
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4 Link Question

Post by bluenose » Mon Sep 09, 2013 8:36 pm

My car was hooking real hard, bending rod ends and wheely top bars, carrying front wheels past the 60', sometimes unloading the slicks. The top bars were in the middle hole on the rear end so I dropped them one hole, the car is doing what I expected, squatting quite hard but still 60 footing 1.12, not picking the wheels at all but planting the wheely bars. If I put the top bars back up one hole in the back to where I had them originally and raise the front of the top bar up one hole will the car still squat as much as when I dropped the back of the top bar or will it pick the wheels less violently (92 camero, 565,4:30 gears 1.87 PG, 2230 with driver)

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bluenose
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Re: 4 Link Question

Post by bluenose » Tue Sep 10, 2013 7:46 pm

More info: I think part of the problem is the car was set up to run 4.70 quick 8 with a 632 and Nos. I bought the car as a roller and put a all aluminum 565 which is 150 lb lighter on the front end.Bottom bar is 5/8" lower on the front, the top bar was 2nd hole above the axle tube (9 1/4" center to center on the back of the bars)the top front bar was 6 3/4" center to center of the bottom bar bolt. bottom bar is 20" long center to center and the to bar is 19 3/8" center to center. car weighs 2320 with driver. Maybe someone with a program can check it out but I think (from the garage floor) it looks like 77" at 6 3/4", please correct me if I am wrong.
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bluenose
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Re: 4 Link Question

Post by bluenose » Wed Sep 11, 2013 8:43 am

Am I in the right section or should I go to another?
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dave brode
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Re: 4 Link Question

Post by dave brode » Wed Sep 11, 2013 5:39 pm

No expert here, but I've helped guys with 4 links, and maybe got lucky.

Imo, you MUST level the car and get under it and plot it out on the floor. Chaulk lines everywhere.....Dave Morgan's book is worth the money. Some outdated info but the section on plotting is good imo.

Since nobody else has said, I'll give 2 cents. Hard to say for sure, but I'd bet your 2nd option would be less violent, and squat should be reduced. IC should move out and down. Can't say how much.

Dave

steve316
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Re: 4 Link Question

Post by steve316 » Sun Sep 29, 2013 8:06 pm

I had the same problem with a altered. I dropped the bottom bar one hole on the chassis; This made the intersection point 47" out and 3&1/2 off the ground and about 46 per cent anti squat. I also had to give the shocks two more clicks. Good luck Steve

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John Wallace
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Re: 4 Link Question

Post by John Wallace » Mon Sep 30, 2013 8:28 am

I agree with Dave on the book.

Here's a web site by Billy Shope:

Chassis pages

It seems to be missing some of the original stuff he had, but he had to change providers.

Still some useful info there.

:)
John Wallace
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www.wallaceracing.com

Bubstr
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Re: 4 Link Question

Post by Bubstr » Fri Oct 04, 2013 10:41 am

Unless your getting separation in the rear, this is more than likely a center of gravity problem. Too high or too far to the rear.
Older I get the less I know for sure

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