fortmyerspolice

iTrader: (7)

Well, I checked underneath my car today and found out my torque arm bushing is split. I guess that was expected after 90000 miles. I recently put it poly motor mounts and have ZERO vibrations whatsoever and no more y pipe bang, so I figured I'd try out the poly tranny mount aswell(prothane) and poly torque arm mount. I heard people notice a difference with the poly torque arm mount.

My question is, how do you replace the torque arm bushing? I searched and searched but found no answer to just replacing the bushing. Will I have to check pinion angle and all that ****?

As for the tranny mount I'm sure I can find a guide somewhere, haven't looked yet.

MeentSS02

iTrader: (11)

Keep in mind that the stock torque arm bushing is split by design...right down the middle. That's the whole "clamshell" design thing...unless your bushing is split even more than that.

To replace that, you'll need to remove the stock one (duh), and grind away/drill out the rivets that hold both sides in place (the rubber is bonded to steel plates, which are riveted to the outer shell). Reinstall is as easy as sliding the poly piece in place and bolting everything back from whence it came. No adjustments necessary...it is a direct swap.

The tranny mount is even more simple...you'll most likely have dropped the transmission crossmember to get to the torque arm mount (I'd recommend it). Two more bolts, and the mount will come right out. Bolt the poly mount in place, and you're done. I wouldn't recommend the preload plate that comes with the poly tranny mount...some people that install that plate complain of vibrations in the drivetrain, and I'd guess it comes from that preload plate essentially making it a solid mount (plus it really jacks the rear of the transmission up, messing up your driveline angle). I've never run the preload plate on mine, and have NEVER had an issue, and never had any problems with extra vibrations.

95GreenZ28

iTrader: (70)

I agree I would not use the preload plate either. I went with a new gm rubber tranny mount

Zero4488

iTrader: (10)

I just put the poly tranny mount on my car...and I am getting a noticable vibration after 2k rpms. What exactly is the preload plate? Is this vibration normal?

Tally TransAm

iTrader: (17)

i know the energy susp trans mount has the preload plate (throw away) and two large humps on it which i had to gring off to avoid vibrations

fortmyerspolice

iTrader: (7)

i just put prothane torque arm mounts and trans mount in.


For the trans mount. I bolted the 2 bolts up to the tranny then put the crossmember back on, whats the point of the stud and nut in the middle of the trans mount????

pillagenburn

iTrader: (2)

if you don't already have poly motor mounts, you might wanna get those too. Poly tranny mount and rubber motor mount might not be a great idea in a hard launch...

BMR Tech

iTrader: (9)

Experiencing vibrations after installing a poly transmission mount are common and well documented. I only recommend them for use under extreme use conditions.

Shockwave179

iTrader: (7)

Don't do the poly trans mount unless you want all sorts of center console related rattles.

crzytown69

iTrader: (17)

and broken tail shaft

fortmyerspolice

iTrader: (7)

I just have bolt ons and street tires, don't think I'll be breaking it anytime soon. Vibration is minimal.

bcaputo2

I just installed a poly trans mount with the plate and it feels great. The only time i feel a vibration is when im doing 80MPH or over; the center console seems to squeek, but its worth it.

What kind of torque arm do you have installed, or do you have the stock one with the poly bushings? I been looking for a tubular torque arm with poly bushings, but many say it isent worth it.

fortmyerspolice

iTrader: (7)

stock with prothane poly. Should of seen stock rubber torque arm mounts, ******* shot to hell.

bcaputo2

haha, same here. Have you ever heard of a significant diffrence with a tubular torque arm? Or is it just a myth.

fortmyerspolice

iTrader: (7)

Don't know, sounds like a myth though. I've heard of short style torque arms breaking though.

Good thing to do is have a tunnel mounted torque arm so you won't break the tailshaft.

BMR Tech

iTrader: (9)

A tubular torque arm on a stock or near stock car isn't going to show much better track times then the stocker arm, only more consistency in the elapsed times. An aftermarket torque arm starts to shine when the power is increased or the launching techique is more aggressive.

We offer several different versions to meet your specific needs. The torque arms can be found here-

http://www.bmrfabrication.com/F-bodySuspension.htm

If you have any questions about our product line please feel free to ask

tbird31

iTrader: (22)

i have poly motor, trans and TA mounts in my car, yea it's kinda loud, but it also gives you a firm feeling and isn't so rough it's unbearable...

transAm-98

iTrader: (1)

I just put a poly mount in the other day (without the preload plate) and I don't know that all the fuss is about. I really didn't notice any extra vibrations, no more than a cammed out car already has. I already had the poly motor mounts though so maybe that makes a difference.