"We have taken our popular unitized lift block, made it stronger than ever, and added a floating traction bar into the mix for a bullet proof rear suspension setup. Our blocks incorporate the u bolts aswell as sandwhiching the spring with side plates to prevent ANY possible block movement."
i would think with the axle being centered on the spring, you would be increasing axle wrap. i believe this is one of the advertised "improvements" on the redesigned GM trucks. moving the axle forward is supposed to decrease axlewrap. but if you go with traction bars, it's a moot point. interesting nonetheless. looking forward to hearing how it turns out.
I didn't have time for the truck to be down to experiment, so I found someone to make me bolt on hangers. I actually bolted the hangers on with the stock suspension in place, then switched over a couple of days later.
Like I said before, I didn't want try to the hangers off without messing them up, then try to reinstall them (if they line up in the right place), then get the parking brake to work, without messing anything up. Plus I couldn't afford the down time to do it.
I like the idea, but there is no way IN HELL I would trust those bolts to hold that hanger one.... I dont care who designed it or about the fact that you are going to tell me you havent had any problems yet..... Those bolts are definitely the weak point of the entire rear of that truck.
Anyhow, enough of me being negative.... How much were the 08 leafs and where did you get them?
The hanger uses ten (10) 3/8" grade 8 bolts. It has been run on the CAD. I'm not an engineer so I dont know all the technical terms, but everything is more than sufficient. If you wanted to drill them out to maybe 1/2" bolts I'm sure you could. Like I said, all the technical aspect of it is over my head but Trevor could answer any question you have.
As far as the leafs, I picked them up from a guy that put his lift on his truck when it was brand new. Had the factory leafs laying in the garage. I found him on craigslist and picked them up for $100.