Thread: My unique rear suspension

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I have one laying around off the back of a 99 Suburban 1500 but it is just ben't wrong. I am going to try and find something basically straight without the dogleg ends.

Am do just about the samething on the rear of my '27 sedan, only adding split wish bones, other wise it looks pretty much like yours.Just hope it works as good as it looks. Sure turned out to be a lot more work than coil overs but yet sure is a lot cheaper. HEY, a buddy of mine and myself have a bid disagrement on my front axle. It is a 5" droped strieght. I say it needs to lean back 4-7 degress, he say's it needs to lean forward 5 degress. Who is right? ...Joe

I'm using cut trailer springs from Tractor supply on my '27 sedan, (only cost me $42.00) I cut them the same legnth as what Speedway sells and I'm only running 2.5 leafs, don't want to hard of a ride. The springs were 3.5 leafs before I removed one. I think the wish bones should keep everything in place, or at least I hope that they do.. Looks like everything should work fine but won't know untill I run her down the road. Time will tell.

Back Joe, caster will make it go straight...Dennis

Leaned back is positive caster and is what you want. Leaned forward is negative caster and will render the car undriveable.

I'll play Devil's Advocate for a minute. I think a single leaf in the bottom is too weak and flexible. If this were a full spring with 5-7 leaves it would be ok IMO, but I think wrap up and movement will be a real problem.

Posies told us we could run their quarter eliptic setup as the sole lower control bar on the setup we used in Dan's 30, but we didn't want to trust it, so we did the fourbar routine and simply used the spring as a spring.

Maybe you are planning to add more leaves, and if so I think that would work. Here is a picture of the setup we ended up with.

Don

I thought it was positive caster that I wanted, now I get to prove Ed wrong )
Never built a Rod like this before, have built a view muscle cars and Corvairs and even a couple of Hotrod trucks. But never a true Rod. Am taking my time and having a blast doing it, figure it will be the last car I ever build from the ground up, just getting to old for this much work.. It will be a true Rat rod when it's done.I even found a old Case tractor radiator shell and monted it last night, really, really looks cool!..... thanks so much for the help guys!