OK so I have an 85 cutlass supreme brougham with the 307Y. The long bolt that holds the alt. to the bracket and also serves as the swivel point is the wrong size on mine. The head is to small and is twisted in the bracket. It was this way when I bought it. Id like to replace it but dont know the correct size. Shucks and carquest will only match it to the bolt on there. They dont have it in there computers. So if anyone knows the size that will be a big help. I would go to the local jy but they never have anything around here. I would have to drive a hour each way to olympia to go to decent jy. Thanks. Any help is appreciated.
