Thread: And more questions: Front suspension & clearance

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It sounds like you're running the 48 Ford rubber biscuit style mount.

They do tend to give up the ghost - some of them are made of overly soft rubber.

Take a look at the white motor mount biscuits on my 31.
They're cut from UHMW (Ultra High Molecular Weight) plastic.
Similar appearing to Teflon, but 70% stronger from what I understand.

Hard as a cotton-pickin' rock too, but they do damp vibrations and after installing a pair of them in my 32 that uses the same style mount, the car seems smoother than it did with rubber biscuits.

UHMW is available at industrial rubber stores - places that cater to farms and oil field - in sheets of varying thicknesses.

Cut em out with a hole saw, clean up, drill for motor mount bolt size and you're in business.

If you buy some small UHMW sheet pieces from the remnants pile, it's usually pretty cheap.
UHWM costs about 1/3 of what Teflon costs fwiw.

Maybe $3.00 invested in both sets of motor mounts on my two cars - four biscuits.