2000 silverado rclb to rcsb drag truck low budget conversion
#292
GFYS and STFU
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Joined: Jan 2007
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From: Here and sometimes there too.
I agree with Mangled, I think this kids got ***** and good idea's but no experience.
#295

The frame is cut at an angle to maximize welding surface area. If you look at the frame rail below where the tubing is attached you'll see a line where my weld penetrated.
The tubing is welded wherever possible to the original frame. The upper joint is gusseted but I was really limited as the angle of the joint is only 15 degrees.
As the spring compresses under force the angle of the arm is going to pull the axle up and forward. Doing this is going to pull the spring forward essentially trying to rip it out of its pocket. In addition to that your pinion is going to rotate downward increasing the pinion angle in relation to the drive shaft angle and putting more stress on the U joint.
What you want is for the pinion to maintain as close to a zero angle difference with the drive shaft as possible through out it's suspension cycle. You may want to consider moving them under the axle to put them more parallel with the drive shaft and minimize any pull/push forces on the coil springs. A good example would be to look at the way they set up a NASCAR chassis rear suspension. I am not saying you have to use Long Truck arms but look at how there set up functions.
I have exaggerated a drawing of what I currently see. Keep in mind that all your mounting points are solid as you move the suspension through its arc.












