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Check Out That
Chassis
By Jim Salemi
8/9/04
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Hey Jim,
I have a question.
I have an ‘89 Mustang backhalf
4-link 33x10.5'ws p/g 4.10 gear.
Front weight percentage is 60 percent.
Rear weight is 40 percent. Strange
d/a shocks with 130 lb. springs.
632 bbc on nos appr 1200 rear tire
upon release tran brake. Any suggestion
on 4-link setup length and height?
Thanks for any help,
Chays
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Thanks for the question,
Well first off there is the 10.5 wide tire to
deal with. With the amount of horsepower you
have, I suggest a progressive nitrous and throttle
set up so it doesn't immediately blow
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the
tires off, especially if you are on a marginal
racetrack.
When setting up the 4-link you should be looking
for measurements in the high 50's out between
8 - 10 inches up. Set the preload for what you
think to be ample to make the car go straight.
It may take several runs to tune all these adjustments
in properly. If there is any way to get some
weight off the front of the car and move it
to the rear it would help the way the car works
and then 4-link could be shortened up. Start
with the shocks in the middle on both bump and
rebound. Remember a video camera and have someone
tape the runs or reference your data logger.
Analyze what the car does and what you feel
in the seat and tune accordingly.
Thanks Jim Salemi
Jon Salemi
G-Force Race Cars Inc.
115 Fillmore ave
Tonawanda, NY 14150
716-693-8533
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