550-600HP 4spd suspension help

440dart123 said
Does the houseing just sit in them brakets and the ladder bars control the twist by the look of it as iam not sure how them work but it looks like the still clamp to the springs and would still twist the springs just as if it was stock or is the houseing able to move? or am i wrong all together lol

Those spring mounts do not clamp the housing. It's a snug enough fit that doesn't allow vibration, but does allow rotation and the slider part lets the springs move independently of the housing. That's where the ladders come in to control the housings rotational movement. It's a little hard to describe without writing pages, but you have more tuning capability with that set up.

The original Mopar leaf spring design is the best in the business. The short front, long rear leaf setup allows for a stiff front half and a rear half that can flex and work to put downward force to the tires. But like anything else, there is a limit before a upgrade will bring better results. The stock system with a tight snubber or even with Caltracs tends to hit the tires hard because the energy (instant center) is higher and more rearward. That tends to give more downforce to the housing and more upward motion to the car. For moderate track applications, it's gold. But when you're making big power and hitting the suspension hard with a big converter or a stick, you want the tunability of a ladder or four link system to get more forward movement vs upward movement. With a ladder and especially a 4 link, you can move the instant center forward in the car and soften the hit and allow for more forward motion. The beauty of a tunable system like this is, you move the capabilities from the springs and shocks to the ladder bars and shocks plus you don't have to work the springs nearly as hard.

This is probably all for nought since you will be mainly on the street. My thoughts about this was concerning your track outings, especially with a small tire, stick and 600hp.

Hope some of this made any sense.....:D.