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i have used them in the past. it gives a different feel to the car for sure. i don't really know how to describe it not really harsh but deff different. if you like to feel the pulse of the motor in the steering wheel you will like them.
Solid as in metal? I was told that poly would allow you to feel a lot of engine and also be harder on the engine. I have not heard of solid...??
I just love to learn new stuff...ain't the forum great...
Get the poly mounts. You won't break them and it still dampens some of the vibration. Even if for some reason they do break there is a safety in there tha twill not allow the mount to come apart. Solids are tough on you and the car.
I'm running Energy suspension polyurethane motor and tranny mounts with safety interlock. They have held up through many trips in the 1/4 mile without a problem. My brand new stock rubber mounts gave up after a few passes. I have noticed that they do pass a bit more vibration through the body of the car, but it could also be my 3 inch mandrel bent exhaust's rumble.
They also make rubber ones with the safety locks in them. I have an idea to put a solid or poly one on the drivers side and a rubber on the passenger side. It seems the drivers side breaks more often from the stress then the passenger side and with the rubber still on one side it will still absorb the vibration.
had solids in mine (still have them but they're yours for the price of shipping). i switched over to poly on the recommendation of an engine builder. he warned me that solid mounts stress the block in an un-reinforced area and can cause the iron to crack. this, he said, is not a good thing. i'm paying this guy to impart that wisdom to me? :rolleyes: anyway, i explained that i was trying to make the engine and transmission a 'stressed member' to increase the stiffness of the frame. not a problem, he says. just don't do it that way. the c-3 frame has WAY too much flex for that. it can still be done, but it should be done with plates at either end of the block where the block can take those kinds of forces. the middle of a waterjacket is not the place to stress the block. so there! :p: that's my $.02.
clutchdust,
I have a 1977 Chevy power book that has a section on frame preparation that you may want to see. I will Fax them to you if your interested.
Bud
When I bought my 66 conv it had solid mounts (and I too will gladly send them to you for the cost of shipping) which I switched out for rubber mounts. I was thinking of going the "correct" ncrs route at the time so I put in original type non-locking mounts. I now constantly debate swapping them for the locking type (for peace of mind).