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Can,somebody please help me. I have a 97 trans am ws6... the other day I was driving down the road then I hear a big ass pop sound like a backfire then all of the sudden the car was shaking like crazy. So I swapped the rear end out and the problem is still there. But when I barely give it gas it doesn't shake but as soon as I touch the gas kinda it shakes really bad. Driveshaft??? Maybe help please
 

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Take a look at your engine & transmission mounts. The trans mount can look good but still be broken.

Next, look at the torque arm that runs from rear end to trans.

Check driveshaft out for broken u-joints.

Finally, don't forget about the engine. See if it's firing on all 8 cylinders by removing 1 spark plug wire at a time. If the cylinder you removed wire from is running well, engine idle will noticeably change. If cylinder is not firing, there will be no change when that plug wire is removed.

You could have ignition problems, fuel problems, jumped time, valve train issue, etc.
 
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