pinion angle
 

Hi. Need info about pinion angle - race.I have 1969 Camaro and I use Cal Track system and split mono leafs from Cal Track.

Harry

Re: pinion angle
 

3-4 degrees will get you started, then track tuning

Re: pinion angle
 

Hi and thanks. I was measure and the trans is 0,7 degree drive shaft is 3,3 degree and pinion is 1,7 degree.

harry

Re: pinion angle
 

4-speed trans will require more pinion angle.

Bob

Re: pinion angle
 

Hi. It is a auto trans TH 400. Should I get the pinion up or down ?

Re: pinion angle
 

Depends on if "0" is in between the 3.3 and the 1.7.If it is the pinion angle is 5,if not 1.6. 5 is fine,if 1.7 pinion down.Backup and look as I have seen several cars with positive pinion angle on the rear.The driveshaft to the pinion should be down(shaped like a V).The trans to the driveshaft should be closer to "0" for a race only app.Although this will shorten ujoint life.Jeff

Re: pinion angle
 

Go to Sears and buy an angle finder. It will stick to the flat spot on the rear housing and tell you what the angle is in degrees. All of the big time chassis builders do this all the time. Phil Mondella, Kenny Kier, etc.

You want at least 2-3 degrees with an automatic. The yoke wants to point towards the ground, this helps to plant the tires upon throttle.

Bob

Re: pinion angle
 

At least 2-3 degrees? Then what is the maximum? In other words, what is the acceptable range?

Re: pinion angle
 

I would go 4 degrees on the auto and 6 or 7 on a 4 speed.
Peter