YukonJack

My Whipple supercharged Yukon does this and it is annoying, not to mention hard on the drivetrain if any tires break loose. I'm not really breaking loose tires other than maybe just briefly on one front, so I wouldn't call it a wheel hop, plus it also does it at a rolling punch where I am sure they're not spinning. It looks like other trucks do it as well, even the 418 2.9L badass in one of the links below. I am starting to think it may be the active suspension overreacting a bit too much/too late, causing this oscillating. It is really obvious on the last link at 0:30, as shot from the Trackhawk's POV. Any ideas? I wonder how standard shocks would work as a comparison. Not looking for a drag truck, just a fun daily driver that doesn't launch like a freakin' see-saw.

https://www.youtube.com/watch?v=cJzv6uxFK_c


https://www.motor1.com/news/235903/e...hawk-showdown/

YukonJack

Just so you know, there are 3 links in my post above, only the 2nd one shows the link as a pic.

smokeshow

iTrader: (16)

That would be an absolutely unacceptable thing to deal with.

ZO6Ted

Major annoying. Maybe a double adjustable coil over setup could cure it. Not sure if Atomic has anything for that but probably could point you in the right direction if not.

03sierraslt

iTrader: (22)

I know a lot of the Yukon’s had major problems with the Borg Warner transfer case and a lot of power, the traction control Would try to take over and it would be applying the brakes at the same time it was trying to spin. It made for a very violent launch.

ZO6Ted

Wonder if that was what was happening in my 07? Input please? Could hardly stay on the track or in my lane it was so violent but I didn't have straps. Lowered bars all the way in front for the track.

randeez

if you had torsion bars it would have been pre-07? and i think you would have had different transfer case than the borg warner - not to say you didn't experience the same thing, but i would bet on it just weight transferring, loading up the rear axle, unloading, repeatedly
the nnbs yukons are the same as the trucks with a coil spring over strut, atomics coil over mounts work but i dont think that would completely solve it.

I will see if my yukon does this after some more power but dont experience any bouncing atm. But, it does have double adjustable front coilovers, single adjustables in the rear, belltech lowering spring in the back, spohn adjustable 5-link bars (4+panhard), eibach front, rear sway bars

03sierraslt

iTrader: (22)

ZO6Ted

It was the 07 classic. I thought it was toe in that was causing the unloading because the front end would rise hard on launch and the steering wheel would jerk violently from left to right as the front tires hooked and unhooked. Got rid of the truck before I sorted it out.

1FastBrick

iTrader: (17)

What about strapping the front to minimize the weight transfer and unloading the front end???

https://www.performancetrucks.net/fo...l-spin-414845/