Round Rock TA

I know that I poly tranny mount will allow you to feel more of the tranny shifts, bumps, rear end vibes, and things like that. My car seems to have a vibration when under heavy accerlration and at high speeds (90+). Whats going on is my pinion angle is changing when the tranny moves or torques. Energy Suspension does say that the poly mount does help maintain proper driveshaft angles. I think I might give it a shot.

I have played with my pinion angle but that does not stop the vibration, but it can make it worse. I have a custom crossmember that makes it hard for me to adjust the pinion angle. Instead of puting the finder on the driveshaft I have to put it on the output shaft or yoke coming out of the tranny. Mike (Yank) told me what to do but I did not write anything down and forgot. I have a 4L70.

Thanks
Brian

chevyguy3

iTrader: (4)

you should be setting your pinion angle at the rear of the driveshaft and on the rearend yoke, not at the tranny. maybe thats why you have vibrations?

Round Rock TA

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by chevyguy3:
<strong>you should be setting your pinion angle at the rear of the driveshaft and on the rearend yoke, not at the tranny. maybe thats why you have vibrations?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have been setting it using the rear of the driveshaft but Mike at Yank told me that it is different for the 4L70 with its type of crossmember. I just forgot what he said. I'll e-mail him.

Tim98TA

iTrader: (7)

poly mount = ****.
You will NEVER get that vibration out. Stick a stock mount in and it will go away.

Tim

schultzsj

iTrader: (1)

I really can't see a poly mount REDUCING any kind of vibration. I put one in after breaking my stock one and then took it back out 2 weeks later.

It seems to me that the stock tranny mount cannot really permit that much movement - expecially from torque. I believe that more movement can be traced to the motor mounts.

Your vibration may or may not be related to your pinion angle but putting a poly mount in will give you vibrations you never knew you had <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> !!

<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Steve