tranny mount install, why is it so loud?

[Eugene]

my shifter is lying a bit low but its not too bad, but ugh, this vibration is disgusting, I looked through some old posts and people added washers to dampen the sound, i don't think that'll work with mine, is there anything else i can do to make this NON existant?

[WickEdSix9838]

u HAVE to had a half inch of washers to make the geometry right, thats all the vibration and noise, if u dont do it your U-joints will go bad or break prematurealy...

[Riles]

If you want to get rid of ALL of the vibration, you will have to go back to a rubber tranny mount.

The poly mounts are designed with one thing in mind- stiffness. They sacrifice noise for stiffness. If you decide that you would rather have a quieter ride, you'll have to have a softer mount. Its that simple.

[01camaro]

I got a Prothane poly trans mount and went and bought a new stock transmission mount to compare since my old one was broken. The stock one is 2 9/16" tall. I knew my Poly one was short so i cut myself 3 spacers outta 1/4" angle iron to stack between the mount and transmission. Measuring it came out MAYBE 1/32" taller than the stock one. But that's not too much to worry bout especially since u can't use the factory safety catch anymore it compensates for that. I went and bought 2 2" bolts for the mount. Stock bolts were 1 1/4". Now, perfect geometry.

I HAD to fix mine the right way because even with washers i couldn't bring the transmission up enough and my front universal joint wore out.

[camaro_speedemon]

Yes, your going to have to add spacers, and the vibration and noise is normal with the poly mount. When I installed mine, the vibration was so bad, it felt like my tranny was gonna fall out of the car. It gets a lot better after it breaks in, in about 500 miles or so.