[BVR421]

Originally Posted by dads72lemans

If anyone knows of reputable pontiac enthusiasts around Lincoln, NE give me a shout. Thanks again and the site looks great. Dan

Welcome to the PY forums Dan. Darn good resourse for PONTIAC help and info. Problem is, if you are changing your Le Mans to a Chevelle you probably need to meet chevy people! LOL Chevy motors in Pontiacs dont get a lot of repect around here athough there are quite a few who are knowledgable about the GM small blocks. And a lot more who reinstalled real Pontiac power after buying a GTO or Firebird that some misguided soul had cobbled in a chev motor.
Unless you are a diehard chevy smallblock fan, you might check the local market to see what you could sell the sbc for. Its likely you can get enough to find a real motor for it. Here's another idea, If the 6cyl is not trashed dont totally discount its use, at least for a period of time while you arrange for a proper Pontiac 400. Most of us are so power crazed, a nice Le Mans with a 6cyl could be a refreshing variation on what we usually see.
As you suspected already, no matter if a chev v8 or Pontiac goes in you will need new motor mount brackets for the frame and some wiring detailing. The trans crossmember is usually not a problem. It can be slid back and forth to accomodate whatever trans you end up with.
Keep us informed on progress or lack of. If you go with a chevy motor you will catch a mountain of crap around here but you will still be among friends. (8-)