[HWYSTR455]

I'm on engine # 8 in the driver, and get about 100k+ out of each, and if you look at my crossmember, and the current headers on the car, you would agree that I don't baby that thing. So don't think miles has much to do with it.

I'm not convinced it's frame spread some are experiencing, because it takes a considerable amount to show up like that. It would more show in an alignment than in shroud or oil pan clearnace.

On the shroud, my first thoughts would be the core support bushings are worn, and the bolts were tightened. That would raise the core support up to 1.5 inches or more, and cause shroud clearance issues.

Pan to crossmember clearance, my first thoughts would be due to the engine mounts. I've seen such variations in mounts that cause all kinds of problems, wrong part (box/part swap), poor manufacturing, and incorrect application (cross reference wrong). Think about it, if it spread that much, don't you think it would show up in an alignment? Those front upper control arm mounts would have to move like more than an inch, and that would need like a stack of shims to get right.

Second thought would be trans mount is too high, wrong app again. And that would show up as a vibration, since it would whack out the pinion angles.

Original Poster - Guess we're all still waiting for you to complete the diagnosis as suggested, before we can continue. Have you isolated the area the vibration is coming from yet?

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