His Brother e-mailed it to me, dont have a clue how to put a video up...E-mail me and I will send it back
High HP car use negative preload (more weight on left rear) because the chassis torque will load the right rear harder than housing rotation will load the left rear.
alot of it has to do with the shock settings being so stiff for High HP cars, I think some of it has to do with the extra stiff ARB's (although Bickle says his monster ARB will help eliminate some Negative preload) but the housing rotation is negated by the torque of the engine rotating weight onto the right rear..
I work on Dave Pierces Bickle built ProMod has been 4.05 it usually carries around 50-60 lbs on the left rear.
I work on Keith Haneys TS car it is a Stroupe car, 826 inch Schmidt motor, it has run 6.74 it has 25 lbs of left rear.
Todd Kitchens Outlaw 10.5 car, HRC car (that is me) 530 inch BBC with twin 91's it has 110 lbs of left rear,
Ron Muenks Outlaw ProMod (I dont work on this one) he does not have a clue of the weights but runs 6 flats of negative preload. We were talking about this tonight...
I cant explain it all but just know that there is a point that cars require you to take the preload off the right and start moving it to the left as the power increases...
On Kitchens car I can tell when he spools the car to hard because it will drift left and it is set up to launch at around 9-10 lbs of boost, if it is higher the car will go left