It's very likely the rubber hose on the passengers side of the block. Look under the exhaust manifold close to the back of the block. You'll see a short piece of rubber hose that connects 2 metal pipes together. It's got 2 worm screw clamps on it.
You can either try tightening those clamps or, you may have to replace the piece of hose. It's a 7/8" hose and needs to be high temp. You'll need a 3" piece. It's tricky to get replaced but, can be done in your driveway.
You can either try tightening those clamps or, you may have to replace the piece of hose. It's a 7/8" hose and needs to be high temp. You'll need a 3" piece. It's tricky to get replaced but, can be done in your driveway.