Hi,
I was wondering if any one has come up with a formula for finding the Instant Center with the factory triangulated four link. I have a 67 chevelle and have not been able to find one? I know that Lakewood ,Moroso and others make a anti hop bars that move the upper links up 2 inches to change the Instant center and Southside make lower control arms that lower them about 2 inches to change the Instant center but dose any one have a program or way to find the Instant center? There are programs that help with parallel 4 link setups. I don’t want to do a bunch of guessing on the set up I like to know the who what when and were of doing it right!
Thanks

have you scaled the car yet? do you know the corner wieghts and front to rear percentage.

How fast is the car? Without any control arm relocation brackets depending on ride hieght the factory instant center is infinite or way out past the front bumper.

Shock and spring settings with an anti roll are what makes a stock suspended 4 link work. Instant center is 1 part of many IMO.

I found this link here before http://www.baselinesuspensions.com/info/Launching_A_Drag_Car.htm

Originally posted by 1bad67:
have you scaled the car yet? do you know the corner wieghts and front to rear percentage.

How fast is the car? Without any control arm relocation brackets depending on ride hieght the factory instant center is infinite or way out past the front bumper.

Shock and spring settings with an anti roll are what makes a stock suspended 4 link work. Instant center is 1 part of many IMO.

I found this link here before http://www.baselinesuspensions.com/info/Launching_A_Drag_Car.htm

[QUOTE]Originally posted by 1bad67:
[QB] have you scaled the car yet? do you know the corner wieghts and front to rear percentage.

How fast is the car? Without any control arm relocation brackets depending on ride hieght the factory instant center is infinite or way out past the front bumper.

Shock and spring settings with an anti roll are what makes a stock suspended 4 link work. Instant center is 1 part of many IMO

I’ll get the hang of this websight yet!
Thanks for the reply, I have not yet scaled the corners of the car yet but I’m going to shortly.
It has a 327 with a th400 a 3500 stall converter backed up by a 12 bolt at the present time but going to make up a ford 9”. I’m running 4.11 gears spinning 28-10.5-15 et drags mounted on 15x 10 rims. On good are days it runs 12.50s in the ¼ averages a 12.85-12.90 with 1.75 to 1.80 60 ft. I run a after market 1" rollbar in the rear and none up front 90/10 shocks up front and 50/50 out back. I thought sense I was going to change rear ends I would build new control arms with poly graphite bushings at the rear end and spherical bearings at the body mounts. I ‘m going to build up a stronger 327 and wanted to know what changes in the mounting brackets on the new rear end and control arms I needed to make?
Thanks for your continued help!