I have put a 408 in my 87 replacing my 302. I have a built AOD in it that went within 10 miles of installation. I am wondering what I should do for this. Rebuild the AOD, replace it with ?. It is about 550 torque. There is debris in that looks like clutch materiel and it will not shift up from 2nd and seems to start slipping. Good rebuilder in so cal or? and makers of good ones is help too. Thanks I am frustrated about it.