Just changed intake gasket.I let it set 4 about an hour before running When it got hot it started to leak coolent out of back of the motor up high. Not sure if its a head gasket or those hard lines that run from head 2 head ? I went 2 check the hard line by blowing air in 2 it and brock the fitting off the radiator. Can those hard lines on the back of the heads be deleted and pluged?

 

Of course they can.

On the other hand, if you want the engine cooling system to do its job
properly, you will NOT want to delete and plug those.

First order of business to find find out where the coolant is leaking from.

 

No, they can *not*. Those are needed for proper cooling of the cylinder heads.

 

I believe that hard line in the back of the heads is to purge air out of the rear of the heads.