C6 Issue on a 302

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Mar 9, 2012 | 06:39 PM

77f100guy

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C6 Issue on a 302

I have a 302 bolted up to a c6. My problem is this. When I cold start the entire car shakes bad. After it warms up not to much. When you put a load on it holding the break it shakes bad again. I hear kind of a roaring high pitched grinding noise. You give it some gas and it evens out. Around 45 and up theres a very noticeable rotating vibration noise. Ive tried numerous things and not found an answer yet. Replaces the driveshaft with a new one. Still doing it. Motor and trans mounts, still doing it. It continues to get worse, the bad shaking, vibration. Really noticeable whenever your driving and come to a stop. Shakes real bad, sounds horrible. Any ideas? I was told the planetaries are bad from a mechanic, but before I tear this thing down I'd like some opinions. Maybe someone out there has already delt with this. Thanks