kevin g said:
I have seen a long bed crew cab with them bow the frame enough that the cab and the bed actually touched! The angle that they are at forces the frame up when you put them under a lot of force.
Longer bars are better suited for pulling. When viewing a traction/leaf setup, picture it as a 4link, with a flexible upper link. Leafs that once saw compression forces, now see tension.
The lower link sends 100% of the compression force forward...the flatter the angle this bar sees the more it propels the frame forward, and the more the rear squats.
A shorter bar produces higher anitsquat, thus pushes up on the frame/down on the tires....this is great to push SERIOUS amounts of force from the tire to the ground, but with this will often come wheelhop.
Less antisquat (longer, flatter bar) will put less pressure on the ground (traction)...yet will help get wheelspin up, and in the end will pay off once you are hooking up and not hopping.
I think these bars are designed probably for low vehicles or cars, where it makes the bars flat and very helpful....but on a lifted truck, or even stock...bit too short thus steep
Its a fine balance. Personally, i think they are a bit short, and a bit on the small side (not to say people arent having success)....but they jut look like a better street bar imo $.02