Do you need urethane motor mounts? Here is DIY

[Grubby]

I don't think the Oltoff mounts are the right part for an ERA. Not all FE mounts are the same.

The ERA limit bolt certainly helps, but I suspect the bigger problem is the Right mount compresses during hard accel and allows the Left header to come up. During engine braking you would have the opposite problem. I have seen contact marks on enough cars to convince me it is a problem, and I couldn't resolve mine completely.

I did put the ERA limit bolt in the LH and RH mounts.

The urethane sticks like crazy. The OEM mounts are essentially made the same way, but the "rubber" is much softer.

Rodney - I would consider doing a run of mounts. 10 pairs would likely be enough to make this a cost effective project. That would be enough to justify a more permanent mold that could sit on the shelf and be pulled out as needed.

John