Pinion angle question

Whats up guys, we are re-doing the back of my buddys truck and the pinion angle is off by alot, We are trying to figure out where we are supposed to make the hogs head completly straight. Are we supposed to lay it out and adjust or are we supposed to adjust it from ride height? thanks in advance.

Ride Height

i have a question with pinion angle too maybe someone can answer mine.... I just slammed my 05 ram and my rear diff looks like its way off do i adjust the angle by eye and leave it at that or should i get the thing that actually measures it i know there some kinda tool but ive never seen or heard what it is called but i know there is one....

ride height is where it should be done at. If your trans. is 2 degress positive then your pinion should be complete opposite 2 degrees negative.

angle finder is what you are lookin for.

Yes go to a local hardware store and buy an angle finder they aint but a couple bucks.

so i should def. either take it to get it done or go buy myself a angle finder?

Yea like $12 at Lowes/Home Depot/Ace.. probably find some deals online.. I gotta buy me another. Mine's melted lol.

Alright thats better than takin it and spending like 30 bucks... my flip kit has adjustable pinion.. but i dont know anything about measuring it.. how do i go about doing the measuring?

awesome guys i appreciate it. Im confused with the whole thing anyways, have to redo mine aswell.