Ladder Bars

[Chevy55]

There's a lot of possibilities here Jim.
Not enough air in the tires will cause the tires to collapse and break traction with a hard hit. I assume you're running a spring slider.
Shock settings are important. A close video of the tires at launch will help analyze the problem.
I don't think it's good idea to change the ladder bars without knowing the exact cause of the problem.

[Dick Butler]

Dave Morgans book about traction bars will help but if you find it by using the "wives tales" regarding angle of this or that it is a Lucky guess. Need to weigh chassis, front and rear, and use an organized approach to setting up related to instant centers of bars and chassis.. Rocker panel not the same on all chassis etc etc....

[Bob Mulry]

Just a heads up..............

All things equal..........

The higher the front pivot the more HIT (more body separation & more wheel stand) and less forward motion.....

The lower the front pivot less HIT (less body separation & less wheel stand) and more forward motion.....

A car will always ET better with a lower pivot (instant center) location if you can hook it......

Just some really general rules to look at....

Get the Door Slammers Book by Morgan and you don't have to be a rocket surgeon to make it work.....

Bob

[Alan Roehrich]

Do not ignore the front suspension. Often, traction issues are found there.