Measuring pinion angle(???)

[BillyGman]

Does anyone know how to, and what you can use to measure the pinion angle of a RWD car??? I'm asking you this because I chose adjustable upper rear control arms for my 70 Chevelle. They come adjusted to the stock setting for pinion angle ( I believe it's 2 degrees), but according to what I've read, many drag racers find that an 8 degree setting turns out to be optimal for traction on the dragstrip. And I can adjust the pinion angle with these new control arms while they're on the car. But I cannot take advantage of the adjustability w/out being able to measure the pinion angle. :confused: Has anyone ever seen a specialty tool for taking the measurement???

[Smokie]

Billy here is an article that you may find useful, good luck , Javier.
http://www.carcraft.com/howto/91758/

[MM2004]

Billy,

Our engineering dept. uses a magnetic angle master against the driveshaft to determine driveshaft/pinion angles.

Just my .02.

Mike.

[BillyGman]

Thanks boys...good article BTW....

[rocknrod]

Billy,

Our engineering dept. uses a magnetic angle master against the driveshaft to determine driveshaft/pinion angles.

Just my .02.

Mike.
Thats a good way to find out "drive-Shaft" angle.

This works well IF your pinion yoke is machined like this shows.
http://carcraft.com/howto/p176535_image_small.jpg

That is indeed a good article.