Rubber vs Poly vs Solid Motor Mounts

[50FoxBodyGT]

The rubber mounts on my car are pretty rough looking and since the motor is already out, I'm thinking I may as well change them before I put the motor back in (ET next week). Rubber ones seem to be less susceptible to weather (Michigan has some rough weather for sure), poly seem to be a bit pricey, so what about solid mounts? Other than maybe a lil shaking inside the car at a stop light are there any other downsides to a solid mount?

 

[TomCat]

I love my solid mounts. The vibration is kind of annoying at first, but you get used to it.

 

[blkcobra50]

Can't complain about my poly mounts. They are somewhere in between rubber and solid. There is a little vibration but I do have a different cam so that gives it a little vib. Prothane poly mounts raise the motor a bit but the energy suspension do not I've heard.

 

[2KsilverGT]

I have a 331 with a rather large cam and have no issues with my solid mounts. It has a lil vibration at idle as you would expect with a lopey cam but once you start moving they are actually quite streetable. Not to mention I only paid 60 bucks for engine and trans solid mounts

 

[Roland69]

and it looks cool as hell when the whole car shakes when sitting there

 

[JChalfan]

A couple of my friends that run solid motor mounts have told me they didn't notice any more vibration than the stock mounts. Kinda hard to beleive, but that's what they said. I've only ever run stock rubber mounts.

Absolutely replace them while the motor is out though. My experience with 5.0's is that they love to break motor mounts. I'm pretty sure my current car is the only one I've ever had that didn't have broken mounts when I bought it.

Jeff

 

[50FoxBodyGT]

Thanks guys! I just ordered a set of solid motor mounts. Do I have to change the trans mount as well or should everything line up? The rubber trans mount on the car looks brand new.

 

[LXSTASY]

I went with EnergySuspension poly motor and tranny mounts when my motor was out. Solid seems too rough on the street, the polys are nice.

 

[Roland69]

I think I would go with polly

 

[91mustangnick]

i have poly engine and tranny mounts feels fine with a slight vib.

 

[2KsilverGT]

You need to put the matching solid mount on the trans. If you don't there's gonna be some give and the trans is gonna flex and can possibly bust. You always should match your components. Solid, solid, poly poly or rubber rubber that way everything is the same.