Flip kit calculations.

[LeftysRodandCustom]

So i just did the flip kit on mine and have it mocked up with the weight of the truck sitting on it. If my pinion angle is off whats the best way to correct it? All i can see is either shims under the flip bracket, or grind the surface of the flip bracket where it meets the original spring perch. Any thoughts?

[BADAZ chevy guy]

How far off is it? In deg?

[LeftysRodandCustom]

Running close to level at this point. Drive shaft is maybe 2 degrees down from front to back.

[Captkaos]

Are you measuring the angle or guessing.  Long bed, short bed, one piece or two piece driveshaft....  need more info

[LeftysRodandCustom]

Short bed, one piece driveshaft measures 62.5" due to the M21 trans. And its a guess at this point since I havent bought the tool yet to measure. The pinion is level to slighly positive in angle. Its not finding the angle that I'm worried about, it's how to get there. Whether it would be better to shim the brackets on the spring or to grind down the leading edge where it cups into the original spring perch on the bottom side so that it rides more at a downward angle on the flip bracket. Neither scares me to do, just not sure which would be better.

[Captkaos]

IF it needs shims use a wedge under the mount.  It should be pointed up some.  Generally shortbeds don't need shims and the flip is engineered to compensate for the pinion.