If the converter is tight, which it appears, then the car lost a lot more weight after all the modifications than 2 different scales years apart show. The scales say it lost about 220, but the time slips say it lost closer to 400. I guess that would make the converter tighter. I did not change anything in the driveline, so the .3 to .4 decrease in et and 5 to 6 increase in mph is all weight loss. I do know I need to increase my launch rpm, which should help the converter situation.

So, assuming I have the front shocks as loose as they will go, what's the secret to loosening the front end? It is a Bob's profab with coilovers. QA1 single adjustable.

Tony, did you get yours to react better or are you living with it? I built what I wanted it to be even though I knew it would be underpowered and overtired as they put it.

Just needs some more work

Are you working with the E-body in your sig pic

it was hooking so not a big concern of mine. if you are going to bracket race make it hook consistent and don't worry about 60' mine was a little slow on 60' but mine was a stock stroke 360 with indy heads. but it was real strong on the big end mph wise. very deceptive for competitors. won a few rounds with people lifting. so it just depends on what you are looking for. I could have adjusted the converter and made it better but didn't want to spend the money.

I don't know about the particular valving of that shock... but... it is VERY VERY VERY (did I say VERY?) unlikely that 180% anti-squat will want the rebound on full loose. Especially with that big of a tire.

At 180%+ anti-squat, it's trying to hit the tire VERY hard and separate the body. If you have the shock on full loose, it will slam the tire into the ground and use up all of it's travel very quickly in the run. In extreme cases it will actually hit the tire so hard, the tire will bounce back off the ground and unload the tire (which is what's probably happening here).

If you watch the video, the rear is out of travel before the motor ever even makes it up to the flash RPM, within the first 5 feet of the run or so.

The only other thing that would make it act like this is if the shock didn't have enough travel for the separation that the body is trying to achieve at 180%+ anti-squat.

I'm not sure what you have the compression settings at, but if you're going to run the anti-squat that high, I would run them near full tight on compression, and put them somewhere in the middle on rebound to start with.

Full loose on the fronts is fine for now. If you get in a situation where it starts to pitch rotate, and suddenly spins a few feet out, that is a symptom of the front shocks topping out and unloading the rear tire. I don't think that's what you're dealing with here at all though.


Here is a thread I posted last fall... sort of talks about/shows the tire hit that I'm referring to with the shocks too loose.

Mine is a cal-track car, but not so different then your 4-link with the Anti-Squat up that high.

https://board.moparts.org/ubbthreads/show...amp;Search=true

Good luck!
Scott

It's not spinning the tires............It's got a BIG tire, not a lot of power, probably not a lot of gear and some other things. Basically it just doesn't have the "nuts" to work the chassis with that big tire on it.

Monte

Month it went 1.40's with the same tire and caltracs before. Something is going on with the new suspension.

For one thing.. I think he is putting too much emphasis
on the anti squat.. that goes in line with the IC..
if the IC isnt right its picking up from the wrong
point of the car... if it isnt hitting the tire hard
enough move the IC back and up... but when the IC
is up it doesnt hold the hit as if its lower

Try setting the 4 lingk I.C at 50 to 51.0 out and 5.0 to 6.0 off the ground I've heard those settings are pretty good for your average door car at or close to 3200 bls with driver that will run in the high tens to high nines Maybe sommeone a lot more knowlegable on setting a four link car up will chime in with a better, more knowlegable(SP?) setting

The closet I can get to that according to my program would be the following


That also means I went the wrong way again.

I don't really care about chasing et, just want to optimize the set up for consistency.

I can tell you I moved mine a few times and it did absolutely nothing.

he's not spinning, I don't think

I did not beat up Cab's suggested setting. I laughed at me for going the opposite way. I thought I needed more anti-squat from the way my 4-link program reads when I maybe needed less. It looks like several posters think I went to high on the anti-squat.