I recently had the LT1 in my 97 Trans Am WS6 bored out and stroked. I also had a head and cam package put in. Initially, everything worked well with the basic tune from the shop. Then the starter sounded as if it were hesistant to move, then it went completely. I got it replaced at the GM dealership and a few weeks later it went again. I've also noticed that my exhaust is a little more smoky than usual but I don't have cats so I assumed it was that. Am I dealing with a timing issue or do I need to upgrade to a stonger starter with higher ft. lbs. of torque? How do I know? What are my options?