well, were do i start.., i converted my car into auto from5spd yesterday night., but when i turned the car on it felt a little shakey? The more gas i gave the car the more it would shake. Im pretty sure the shaking is being caused by somethin down there but im not sure whats causing it? I purchased a flexplate off ebay and when i recieved it it said aod on it but for some reason the flexplate bolts werentgoing through the holes so what i did was drill them out a little until the bolts went through. could this be my problem..,? There are no sounds of grinding, also it was very hard to get up to 4k rpm, it feels like if the engine is draging..?

 

what did you do with your driveshaft?

 

I am using the automatics driveshaft.

 

How many teeth does an aod flexplate have?

 

Probably when you drilled the flexplate you messed up the engine balance. Replacing the flexplate should help with it. Also check you centerline and mounts. Driveshaft shouldnt matter. I think its entirely the same.

 

Were the holes too small or did they not line up?
If you drilled them to make it line up you installed the flex plate in the wrong position.
It is also possible you have the wrong counter weighted flex plate.

 

the flex plate linese up perfect in 1 position then the rest of the positions it will be a little off. if it does it at an idle its that. if it does it when your driving it could be an unbalanced driveshaft

 

well i put it in place because even after i drilled the holes the flex only matched up 1 way. it does shake when i drive it..! i think i got the wrong weight but if so shouldnt the holes all be the same size anyways..?