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How valuable is anti squat % compared to IC height and length. I have been using a instant center calculator and can get a bunch of numbers and by plotting my current settings I believe I was WAY off. Please don't laugh, anti squat is 33.35%,IC length is 102" and IC height is 5.44 " . Car 60 ' times are usually around 1.35 , and has ran as fast as 9.83. I came up with one plot that come out A/S- 97.51 ICL- 61.40 and ICH at 9.75. It just seems to stay close to 100% AS and to keep the IC less than 62" my ICH is going to be above 9" . Question is , where to start . Thanks

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Anti squat is important... that will dictate the
movement of the rear... dont feel bad about the long
IC.. you can get away with it IF you run a -anti squat
but the torque dictates where you want the IC... usually
with big power you want about 55"-75" based on power
and try to keep a zero or - anti squat(you wont see
the body move much)... as you go out farther on the
IC you will raise the anti squat to follow the line
EDIT
with the long IC and above the anti squat you will
tend to wheel stand.... think of where you are lifting..
in front of the CG you tend to lift the front.. near
the CG you tend to lift the whole car(weight wise)..
then if the IC is too short (behind the CG) you tend
to lift just the rear

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Thanks for answering Mr P Body, guess I'm just a little leary of making to big of a change.

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If you have a 4 link program your gonna find that you
will end up with maybe 6 settings that work well..
and that will be with different IC lengths and where
you are on the anti squat line (whether you want more
hit or less and if it stands up to much)... in my
pic in my sig here its up.. great for pics.. this
other pic is how I normally launch.. this is a 1.19 60'..
mine doesnt change much in the 60' except for the height..
and it does set down smoothly

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My brother got a video of the same pass as the picture was taken. The car carries the wheels no higher than what they are in the pic but suddenly drops them about 15 to 20 feet out. Really don't know if it's just running out of power or it's my suspension set up. Thanks again for your help.

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Its probably the chassis set up... it might be just
the shock settings.. do you mess with them much
EDIT
and mainly the fronts(travel and stiffness on extension)

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My brother got a video of the same pass as the picture was taken. The car carries the wheels no higher than what they are in the pic but suddenly drops them about 15 to 20 feet out. Really don't know if it's just running out of power or it's my suspension set up. Thanks again for your help.

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What are the numbers on a normal run

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Strange struts on the frt set as loose as we can get them. Afco da's on rear. When we make adjustments to the shocks in the rear it shows up in the 60' times. I must say my son and I are not real happy with the struts. Thinking about having them revalved.

If I remember the 60' time on that run in the pic was 1.32 and that was the best it has ever done . That weekend every pass was in the mid 9.80s .

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It might want the shorter IC... thats the thing with
cars... nothing is the same... my setting wouldnt
most likely work for you... just start trying but
move the IC back to about the CG point.. it will
most likely like it just behind the CG... testing
is the only way

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If I'm wrong on this I'd like an explanation. My feeling is if the car is up on the tire w/o excessive spin and chassis/housing movement, a suspension change isn't going to make it go any quicker. I think power has a way bigger influence on 60 ft that most people think. Whether it be gear, converter, engine or a combination of any of the three.
Doug

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If I'm wrong on this I'd like an explanation. My feeling is if the car is up on the tire w/o excessive spin and chassis/housing movement, a suspension change isn't going to make it go any quicker. I think power has a way bigger influence on 60 ft that most people think. Whether it be gear, converter, engine or a combination of any of the three.
Doug

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It is the whole package... I have some good video
of my car with some slippage(controlled) to get up on
the tire.. and I have some other settings that it
gets up on the tire(again controlled slippage).. on
my car it just lifts the front higher with the same
60' numbers... but with it up higher I get more wind
under the car and tends to show up in the 330'...
but I have to make sure whether its the fronts or
rears hitting the 60' lights.. but usually its easy
to see by the numbers

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The thing that got me started on this is the new converter we put in. It knocked a tenth out of the 60' time. It also caused use to change our shock settings that also affected the 60' times. That just raised more questions for me about the IC. My son thinks I should just leave it alone but ..... I can't . Thanks guys.

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