GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Caltracs?

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Old Apr 14, 2010 | 11:49 AM
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Default Caltracs?

Who has them? How much did you gain? What are your thoughts in general? Right now I'm cutting 1.80 60 ft. times with zero wheel hop. But I am get the sensation of my rear end feeling loose and swaying back and fourth as I run down the track. Right now I am running 28-10.5-16 Hoosier slicks anywhere from 9-11 psi...

Last edited by MPFD; Apr 14, 2010 at 01:15 PM.
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Old Apr 14, 2010 | 08:40 PM
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Somebodies gotta have em'?
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Old Apr 14, 2010 | 10:17 PM
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the sway is from your tires, not your suspension. 9-11psi is very low. put some more air in the tires. with a 1.80 you should be able to get away with 16psi.
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Old Apr 14, 2010 | 10:27 PM
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everyone has told me so far that I am running too much pressure. Huh? its worth a try.
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Old Apr 14, 2010 | 10:35 PM
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They will help to an extant, allthough guys are killing 60ft times with the stock suspension.. I added them in hopes to help fix my street traction, but it still blows the tires off, but you can def feel them trying to bite up.. I am wit Stew on the tire press.. You should be able to get away with 14 or so psi, that will help a good bit in the dog walking down the track..
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Old Apr 14, 2010 | 10:46 PM
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1.57" best 60' with cal-tracs. M/T drag radials with 19lbs of air, add more air to your slicks for the loose feeling going down the track. Remember our trucks weigh more than the drag cars.
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Old Apr 15, 2010 | 08:33 AM
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I'm looking to spray from a dig, haven't tried it yet. But, I could break the tire loose slightly with my old 13 sec sprayed 5.3 motor from the hole, and the new 6.0 is running the same time NA that my old 5.3 ran sprayed. So I'm pretty confident it won't hook with out a little help. Hoping to get enough preload to come out of the hole on a 150 shot...

Last edited by MPFD; Apr 16, 2010 at 05:34 PM.
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Old Apr 16, 2010 | 04:44 PM
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weekend bump
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Old Apr 16, 2010 | 05:01 PM
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I’m with the other guy’s on this one, the wallowing is from too low of pressure and another side effect will be a slightly lower mph through the traps. If you have to run supper low pressures to get any size slick to hook, you need to move up in size. In your case though, I just believe you need to air them up a little.
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