I'm getting exhaust fumes, most likely from the rear hatch. Whats the best solution? my car is a 1973 240Z Could the fumes be coming from somewhere else?

Start here.http://www.classiczcars.com/forums/showthread.php?t=8522&highlight=exhaust+fumes

Then go to the forums under help me. The information goes on for pages.

Gas tank vent hoses, gas filler hose, antenna drain, taillights, rear hatch seal, rear hatch plugs, etc.....

any hole in the back(behind the rear shock towers) that looks filled and sealed probably isn't due to the age of the rubber pieces sealing it!

WIll

Well to be sarcastic about it you could have the exhaust pipe extended 3 feet past the rear of the car. It may look a little like rice but it might help.

To be serious, one thing I did do was redirect the exhaust tip so it pointed towards the drivers side of the car. I still get some fumes but not as bad. Like everyone before me said the best thing to do is replace all the seals and plug the holes.

I replaced all of the hoses, grommets and gaskets. My new S/S exhaust, from header to tailpipe, is leakfree. The tailpipe extension is approximately 10" from muffler to tip and slants slightly to the driver's side. I drove my Z around the neighborhood briskly and never experienced the fumes I dealt with prior to just going over everything properly. The real test will be out on the highway when I'm legally tagged and inspected though. It's great not stepping out of the car reeking of fumes and wobbly from poisoning. You can see the exhaust at http://forums.hybridz.org/showthread.php?t=103301&highlight=magnaflow. Look at post 17 and 18.