The demonstration I showed Paul takes two. I put the truck in gear and power brake it to simulate the truck powering forward. This will show you how far your rear differential pivots when power is applied. Then I put the tuck in reverse and power braked again to show the pumpkin moving in the opposite direction. Pauls truck did not show as much movement with his semi-stock tires and gears. My truck with the 4.56's and 37'' tires was badMy truck also used to shudder when powering into it from a stop as the pumpkin moved around behind me, and it was even worse in reverse if I was backing up a trailer. The rear end would pop and chirp the tires when backing up because the pumpkin was moving so bad. Now all of that is gone.
As far as the kit goes. We use all grade 8 bolts and 1/4'' steel for the mountings plates, I used 1 1/8'' tube steel for Paul's bars and i believe 1/8'' plate for the bowtie. My bars are all 1'' and im looking to make another pair similar to Paul's. All said and done The kit will be $300 + shipping. Your choice of the 3 bar setup like what is on my truck or the plate like Paul's.
Time frame. Once I get the PM ill start. Expect a turn around time of two weeks, That gives me time to order bushings, cut, weld, and assemble for shipment.
This is called torque shudder and when we looked under my 1993 we watched the drive shaft jump up and down 2" or more in the center bearing no less while doing a brake stand. The trans shop guy was NUTS for being under the truck while doing this. We cured it with a poly bearing, but, this limits the top speed with 4.10's to ~75 MPH due to drive shaft vibrations. 5 bills later the drive shaft is rebuilt, straightened, new u joints and still vibrates very bad over 75 MPH. Trailer tires are limited to 65 anyway and only in Utah do you need 80 MPH that I know of...
But I can hammer the throttle from a dead stop with a 28' cargo trailer and don't have any shudder while fogging mosquitoes. (Since that cure I now have a smaller IP that doesn't fog anymore...)
