I’m wondering if I’ve missed something here, and hoping it can be cleared up for me.

I have noticed a couple SS/TC owners list in their modification's that they have someone’s ‘stage 2’ transmission mounts.

This has confused me.

I had thought the ‘stage 2’ transmission mounts were made for the SS/SC guys, and that they were essentially an aftermarket version of the mounts included in the SS/SC ‘anti-hop’ kit – which includes upgraded mounts;
In other words, the SS/TC mounts should be equivalent to these aftermarket ‘stage 2’ mounts – where have I gone wrong?

Thanks!

 

Ottp stage 2 rotated mounts

 

umm... that post didn't help one iota.

if you could please read the post, then answer the post - instead of just the subject...

 

I just installed them in my TC. They do help the torque steer quite a bit. But be prepared for vibs at idle with the AC on. ONLY with the AC on. Turn it off it goes away and you don't know anythings been changed. Other than that I'd say they would be worth the money if you plan on doing any racing. If not save your money and vibrations. I installed mine on the suggestion of an expert driver at a HPDE at Homestead/Miamy Raceway. His assessment of the car is it needs NOTHING but to get rid of the torque steer. And he uggested stiffer mounts. Haven't been to the dragstrip yet, got rained out last Fri. Hope to try the mounts this Wed. At the drag strip.

 

@ buellfooll;
so am I to understand that you changed out the mounts because you have assumed that these aftermarket mounts are supposed to be stiffer than the GM-stageII mounts?

I don't know how you have torque steer - I haven't got a single bit of it ~ but I am also stock ATM, and I can see you're Trifecta'd

Has anyone compared these aftermarket versus the GM stageII mounts to clearly discern the difference?

Had you noticed a difference after the swap?
~ I mean rubber does go a long way to remove vibrations - but IMHO, a rubber bushing can be just as effective as a polyurethane bushing under the right conditions; and if it matter, I am assuming the GM-stageII mounts are rubber, and the aftermarket stage II mounts are polyurethane, as opposed to something like delrin...
(basically you could have installed the aftermarket mounts, be feeling negative effects of them, but in effect be no better off because one mount is no better than the other in limiting drivertrain movement)


Also; I do not plan on any roadcoursing or what not with my car;
only the occasional 1/4 mile outting;
my car is my DD, and the current sig is proof of the completing the first leg of a road trip after only having had the car for a couple months;
that picture was taken after driving 1,800 miles from my home.

 

The ottp mounts fit the sc and the tc. there rubber not poly. the gm mounts are nothing really different

 

OK let me help you... You can't compare 'stages' between manufacturers.

The stock mounts in a TC *are* the mounts from the GM anti wheel hop kit. That was made as an upgrade for the SC's, and included axles as well.

Over The Top Performance (OTTP) makes S1 and S2 'rotated mounts'. That is what everyone is talking about. If you're going to mod the car, their S2 mounts are nice for cars over 300whp.

TurboTech Racing (TTR) makes their STOP mounts, which are basically a copy of the OTTP mounts, but they are poly, so you'll get vibes as well.

Other vendors such as ZZ Performance, etc, make stock replacement mounts that are billet. Not really worth much IMHO.

The OTTP S2's are the way to go if you plan to mod and drag race. They even help for road racing as they better align the vehicles suspension geometry.

 

so from the last couple posts would everyone agree on the following;

1) OTTP stage I (rubber) = GM stage II (rubber)

2) OTTP stage II (rubber) > GM stage II

3*) TTR 'stop' (same design as OTTP stg II except poly instead of rubber) > GM stage II

4**) ZZP (billet) < GM stage II

* = I would be inclined to retain a rubber mount
** = I am not a fan of a solid billet mount

Have the OTTP stage II been compared back to back (or what ever) against the GM stage II mounts?

 

NO.
The aftermarket mounts are NOT equal to either of the GM mounts. I have the OTTP mounts which use a rubber bushing about 1/2 the diameter as the stock TC mount. I can't speak to the other's that are available. And that goes for both front and rear. The mounts also ROTATE the engine, I THINK it's 17 degrees, to better align the axles. As far as feeling torque steer? If you are completely stock you won't have the power to spin the tires near as much as with the GM upgrade and not ANYWHERE near as much with other tunes. Example. With the stock mounts, and read my mods, the torque steer would practically take the steering wheel out of my hands. And that is NOT an exageration. After a while you kinda get used to it but on a road course it can be devastating. Wanna see the blade of grass that hangs out from my sun visor that I picked out of my front suspension that I'm saving to remind me of my off road excursion at, maybe, 80 MPH at Homestead? Hopefully it won't rain this Wed night and I'll try them on the drag strip for the first time. It will be interesting to see if they help in a straight line.

If you're not going to do any serious or even semi serious, racing or any more modifications save your money UNLESS you just want bragging rites.

 

GM doesn't sell staged mounts. they sell a wheel hop kit to the LSJ owners which is essentially LNF mounts and some upgraded (read asymmetrical) axles.

OTTP Sells both a stage 1 and stage 2 setup. I would suggest looking into their threads, as the mounts are more than just "stiffer"

 

X2 !!! I was reading GM Stage 2 mounts, and was like

 

I was calling them stage II mounts knowing that I was probably wrong on the name.
last time I looked GM sold them in the wheel hop kit, and separately (looked in the 2010 GMPP catalog).

this is some great info guys - thanks!

 

lots of misinformation in here. the over the top performance/powell race shop mounts rotate the engine/transmission to align the axles.

 

that sir, is precisely why I made this thread, I'm just trying to sort out what is what, and how they compare to the stock SS/TC mounts

 

I have the TTR STOP mounts...made a WORLD OF DIFFERENCE over the stock mounts. A good example is before the STOP mounts I went to the drag strip and had HORRID wheel hop. I installed the TTR mounts and went to the dragstrip this past Sat. I launched pretty crappy a few times and I had absolutely NO wheel hop present at all. I also have the TTR upper engine mount, so that probably helped out as well. Any GM mounts are basically worthless to you if your going to drag or track your car. Before the mounts, my car literally felt like it was bouncing off of the ground at the strip. TTR or OTTP mounts, but obviously I like the TTR mounts. Can't go wrong with either one IMO. Good Luck!

 

my only issue is the the STOP mounts are made of poly and vibrate everything

 

The only time my car vibrates bad is when the A/C is on. Other than that you can barely feel them...but I like the fact that you can feel more vibes than stock. It gives the car that racy feel...everyone that i've taken for a ride in my car before and after loves how the vibes make the car feel. But to each their own.

 

i had poly's. i thought they were fine too. then i switched to the OTT mounts and life is good. less visits to the dentist cause my teeth stopped rattling

 

hahaha ya I tend to not use my A/C anymore...but I feel like the car runs like POO when the A/C is on anyways. I'm just glad I get no more wheel hop...

 

I had poly ctrl arm/tranny/engine mounts on my last jbody. It vibrates the car a lot compared to stock. I don't even want to put my AC on at a stop light.

 

...bringing this thread back.

I wanted to thank all of you for clearing this up for me;
Because of my clarity on this subject, today after seeing OTTP having them on sale, I bought the stage 2 mounts.

 

I take it you missed my last post completely?

 

sorry.
deleted.

 

oh crap man, no need to apologize!

You meant well, but just missed that I understood this...
hopefully someone can find this thread in the future and have any transmission mount questions they have answered...

 

Buellfooll was saying that these ottp mounts rotate the engine 17 degrees. How, by putting these two mounts in do they accomplish this 17 degree rotation? By what means?? AND how the heck can the engine physically rotate 17 degrees if its held solidly in place via the engine mounts? I would think that by twisting or rotating engine, this would cause the engine to mount connections to snap!!?? And what does that mean "the axles are aligned" how are they aligned? Sorry if its common sense to everyone but I would really like to know these things bc these mounts are gonna be one of first mods!! Thank you much