slow motion of launch

[o2camaross]

1-2 seems to be pretty hard and doesn't give me as much problem as 2-3. 2-3 is pretty firm and positive too. I think u said it's commanded to shift at 5800, I'm in the truck now and on motor it hits 5950 then goes to 3rd. Sound right?

[ecld_07]

Thanks Allen, thats your tuning! Djm makes these pinion shims that go between the rear end and the bracket. Would these help?
http://djmsuspension.com/products/Accessories.html

I got the kit with a bucket that the rearend sets on,on top the leafs. Then there's another piece on top the housing that clamps it. I can adjust the front and back bolts to raise or lower pinion. Then reclamp the u bolts to hold it. Like Allen my transmission is raised about 2in. I also had to clearance some of the crossmembers under the truck for the larger driveshaft I run. Stock might not have problems.

[o2camaross]

I did the same but my bracket and bolts are maxed out. How do you raise the tranny tailshaft?

[farmtruc]

i built a trapezoid type mount under the mount.

[o2camaross]

Oooo good idea. I guess I'll get her on jack stands, remove the nut on the bottom of the tranny mount and jack it up a couple inches and see what that does and build a mount from there.