motor mounts

[V8MUSCLE]

Solid VS. Poly VS. OEM

is there any real benefits to poly or solid motor mounts over the OEM ones?

[9T8W66]

The OEM ones are weak and after awhile will deteriorate enough to allow the engine to move. This movement will produce a loss or torque and also have detrimental effects to the transmission mount. Mine were so bad that the I tore 2 1LE trans mounts in half before I replaced with all poly mounts.

[sunsetorangess]

If its a DD i would stay away from solid, Poly hold up very well but transmit a bit of "road noise". Anything is better than stockers...
J

[ls1camino]

I went with solid. I really didn't notice any change from stock driving.

[V8MUSCLE]

is there any performance gain to solid or poly motor mounts?

i read somewhere that any twisting the engine/trans does in its cradle is lost power. any truth in this?

[Rk ws6]

i went with poly = prothanes but ive heard from a buddy with solids that theres no difference in drivability

[Wesman]

I went with poly mounts when I installed my LT headers. Definitely a noticeable difference in the amount of vibrations and noise transmitted into the cabin. Nothing horrible though, I could easily live with it on a daily basis.

As for solid mounts, I really don't see a need for that unless it a track only car and you want everything as stiff as possible. They aren't going to offer any advantages in a street car, just more vibrations and noise.

[0verkill]

i all so have poly's but couldn't tell but i put a cam and headers on at the same time so its hard to tell if any more noise from them. and yes and no with power it dosnt add any but yes it takes some from the wheels to twist the mount but not any thing to worry about on a street car. are cars can run solids just fine on the street but no real need to. imo

[garygnu65]

with solids you will feel alot more vibrations ,only use them for a serious drag car.

[V8MUSCLE]

when doing motor mounts do i just need the poly bushing, or do i need the whole clamshell.
A.
or
B.


if the difference is reusing the clamshell im fine with that. i just dont want to take the mount off and be like wtf i need a clamshell

[Rk ws6]

you will drill the old clam shell apart put new bushing in bolt it with the bolts supplied and reinstall simple as that

[joedude02]

i installed spohn solids and i really like the engine response. it really gives a good throttle response to the whole car.

[V8MUSCLE]

you will drill the old clam shell apart put new bushing in bolt it with the bolts supplied and reinstall simple as that

thanks

[totalkos]

I have solids and its barely different than stock. Dont let anybody tell you solids are for 'serious' drag cars or something. I love the way it feels.

[Z28_Driver]

I have solids and its barely different than stock. Dont let anybody tell you solids are for 'serious' drag cars or something. I love the way it feels.

2nd that. I had them in a 78 which my daily driver for about 3 years. It shakes the car a little, but not that bad.

[shady milkman]

motor mounts dont "make" any power OP..all they would do is "restore" any power lost on engine movement.

[ls1camino]

motor mounts dont "make" any power OP..all they would do is "restore" any power lost on engine movement.

Well, that's with any bolt on...Headers, Intake, Underdrive Pulley...really doesn't "add power", just frees it up.

[shady milkman]

Well, that's with any bolt on...Headers, Intake, Underdrive Pulley...really doesn't "add power", just frees it up.

i'd question the the intake as the intake allows more air into the engine making more power..but yea i kind of see your point

[mark21742]

i'm running solid mounts in my goat and have just a small vibration in gear at idle

[shortdog]

Prothanes here, but my car does get a little vibration.