rear pinion angle.. questions, please help.

[jmir018]

so.. i've had a set of upper adjustable control arms sitting in my garage for over 5 months.
I never bother instaling them because i didn't have the tool nor knew the procedure to asjust the pinion angle.
Well.. today i decided to install them.
I measured the length of the stock ones and the Adjustable ones.. one side lined up great.. the other one i had to mess with it a little bit to get it to fit. Took me about 20 minutes.. the bolts came right off for the first time in my life i had no issues...
So i went for a drive afterwards.. and now the car won't stop spinning the tires.. i mean.. it'll just be spin city all the way to third.
My question is... what is the worst that can happen if my pineon is off.. it feels like i actually raised the pinion in relationship to the ground.
I wanted to take it to infineon tomorrow hoping for 12s, but i just might skip the trip if i'll just get crappy times.
Thanks.
Jersey

 

[RippinSVT]

Sorry I couldn't reply sooner. Typically, you want to set the pinion angle a hair lower than stock to get the benefits of adj. uppers. Without getting into measuring pinion angle and all that crap, here's what you need to do.

-remove the adjustable arms again
-take the stock arms and precisely measure them from bolt-hole to bolt-hole
-take this measurement and add 1/8" to 3/16"
-adjust the adjustable arms until the bolt holes are "X" (the first measurement plus 1/8") apart, being sure to measure them the same way and very precisely
-reinstall

 

[Bullitt66]

Sorry I couldn't reply sooner. Typically, you want to set the pinion angle a hair lower than stock to get the benefits of adj. uppers. Without getting into measuring pinion angle and all that crap, here's what you need to do.

-remove the adjustable arms again
-take the stock arms and precisely measure them from bolt-hole to bolt-hole
-take this measurement and add 1/8" to 3/16"
-adjust the adjustable arms until the bolt holes are "X" (the first measurement plus 1/8") apart, being sure to measure them the same way and very precisely
-reinstall

that would give a little more traccion, right?

 

[RippinSVT]

yes. it's kinda complicated to explain, but when pinion angle changes under wieght transfer, power is robbed, and this helps compensate for it.

 

[Red98CobraStang]

How would you go about adjusting pinion angle w/ out adjustable uppers. I assume put plates between the trans mount and trans?

 

[RippinSVT]

How would you go about adjusting pinion angle w/ out adjustable uppers. I assume put plates between the trans mount and trans?

You could do it many different ways. Any time you change ride-height, mounting points, etc, it can change.