Pinto Car Club of America

Does anyone know what the Pinion Angle is supposed to be?  ???  ???

I've never checked it on my first project but I figured what the he!! I'll check it on this one.
Thanks in advance.

turbowagonman

i don't rally know but i have read that it shouldn't be much more than a degree or so on any car.  the angle at the pinion should also be offset at the forward end(transmission) by the same measurement to eliminate vibration

My understanding is the rear diff should be angled down at the pinion enough that under hard acceleration rear end wrap up brings the pinion angle straight with the drive line.The front should all ways have a downward angle.I have some texts on the subject by Ron Butler I'll see if I can locate them.

Thanks for the info guys.
earthquake, if you could find some Text on the subject that would be spactacular!!!!    ;D

turbowagonman

Having a little experiance at it and the help of a street rod builder you want 2 degree's of DOWN angle in the pinion. With that said let me clarify EXACTLY how to check it so you dont do what I did! The angle is if you have a string from the center of the output shaft of the trans to the centerline of the axel tube's. then it would be set 2 degree's down from the string just as explained in the post above that the rear-end can "wrap up" to a straight line. I made the mistake of misunderstanding and thought he meant from level when putting a Granada 8" under a 86 Ranger to put my 4.62's in and set the pinion 2 dgree's down from LEVEL! Long story short when I took off it worked fine......but when I finaly let off the gas while in gear to slow down it just about broke the U-JOINT off it was in such a bind! Hope this helps.   ::)

Thanks Blckshep22, I have a "Compitition Engineering Pinion Angle Finder" and I realize I have to set the Pinion Angle to the Tranny not to the ground.

With that info you just supplied to me, I was thinking that if my tranny is at a, let's say, 7° downward angle I'll need to have my Rear End at a 9° downward angle, right?

turbowagonman

I always thought the pinion angle should be the same as the transmission.

Here is a good link on the subject:
Link: http://www.carcraft.com/howto/91758/index.html

http://www.carcraft.com/howto/91758/index.html (http://www.carcraft.com/howto/91758/index.html)

You can Google pinion angle and get a lot of links.

Thanks Starliner!
There's some great info on that link, I learned alot.

turbowagonman