removing transmission from engine

I HAVE A 97 CHEVY BLAZER WITH A 4.3 "W" ENGINE. IT HAS 133,000 MILES ON IT. I HAVE TO TAKE THE ENGINE OUT BECAUSE OF A ROD KNOCK. I NEED TO KNOW HOW TO REMOVE THE ENGINE FROM THE VEHICLE WITHOUT REMOVING THE TRANS. THERE IS NO INSPECTION COVER TO REMOVE TO GET AT THE BOLTS FOR THE TORQUE CONVERTER. ACCORDING TO THE HAYNES MANUAL THERE SHOULD BE A INSPECTION COVER. THE BOOK ALSO SAYS I WILL NEED TO DROP THE FRONT DIFF. DOWN AND ROLL IT FORWARD SO THE OIL PAN WILL CLEAR. I HAVE NEVER SEEN A ONE PEICE BELL HOUSING. I'M LAYED OFF AND UNABLE TO MAKE A DONATION AT THIS TIME. SORRY. THANK YOU FOR RESPONDING.