Camshaft Blues

So i have been doing alot of reading on here and i think my cam is way to big for the converter i have. I have the eddy rpm cam. Many of you have said that you dont like that cam and i am just curious. I have a 3000 stall 904 with a reverse manual valve body. 3:91 in the rear. Could the cam be the reason i cant seem to get the timing right in the car? Any advice would be great