Pinion angle ?

[70f10rat]

Put rear shocks on so I could measure pinion angle for shims. Rear hanger flip. Rear pinion was at 20 deg. Trans output was at 4 deg. Largest shims I could find are 8 deg. Is it fine to stack shims? And is it normal to have this big of difference in angle after the flip?

I made sure my points I measured were parallel to the ground, but I also read to measure from universal caps..?

So as it stands I need 16 deg. Plus two for deflection under load! 18 degrees?!?!!

Any info or suggestions appreciated.

-sean

[BobbyFord]

Gee whiz, measure your pinion angle BEFORE any modifications and you won't need to ask
4-5 degrees (matched) to the driveline angle will be sufficient.

[70f10rat]

Regardless of prior measurements optimum pinion angle should be equal, trans to rear end , then add a few degrees for windup...... Maybe you mis- understood . I've read and read about pinion angles. I just asked about stacking shims and common pinion mis-alignment with a rear hanger flip.

[BobbyFord]

Regardless of prior measurements optimum pinion angle should be equal, trans to rear end , then add a few degrees for windup...... Maybe you mis- understood . I've read and read about pinion angles. I just asked about stacking shims and common pinion mis-alignment with a rear hanger flip.

I can't see an issue with stacking shims, so long as there is enough of the alignment stud protruding into the shims and into the housing perch.

[Uni Moe]

Or you could remove and reweld your perches.

[70f10rat]

Thought about that, I am a certified welder with a machine... But kinda worried about positioning them correctly.... Freaks me out a tad.... What would be the best way to determine and accurately position perches?

[BobbyFord]

http://www.fordification.com/tech/leafs ... erches.htm

[70f10rat]

Good info but ill just shim it . A lot of work. I just want to get the truck on the road.