Don't know whats going on!!! Help!!!

OKAY SO I JUST DROPPED IN MY NEW MOTOR AND TRIED GETTING IT OUT OF THE YARD. AT 1ST IT SEEM LIKE IT WAS OKAY AND ALL OF A SUDDEN WHEN TRYING TO GO REVERSE AGAIN, IT JUST FELT LIKE THE BRAKES WERE LOCKED ON OR SOMETHING B/C I WON’T BE ABLE TO MOVE THE CAR UNTIL LIKE 3500 RPM. SO THEN I FIGURED IT WAS BAD RIGHT SO ME AND A BUDDY TRY PUSHING BACK TO THE SAME SPOT AND NOW THE CAR WON’T EVEN MOVE EITHER… SO WHAT COULD IT BE? ONLY THING I COULD THINK OF IS THAT I PLAYED WITH THE BRAKE SENSOR DOWN AT THE BOTTOM BUT THEN I PRETTY SURE I LINED IT UP EXACTLY BUT THEN AGAIN IT DOES FEEL REAL SHORT WHEN IM PRESSING DOWN ON IT.!!!
BUT THEN BACK TO THE STORY WHILE TRYING TO REVERSE THE CAR BACK AT LIKE 35 RPM I SAW SOMETHING FLY OUT THE MOTOR AND I STOPPED AND CHECKED AND SAW THAT THE TIMING BELT SIDE OF THE VALVE COVER HAS JUST CRACKED AND I LOOKED AT THE TIMING BELT AND ONE AREA ON IT THE THREADING HAS JUST BEEN TORN… ?? IDK WHY SO THATS WHY IM ASKING…
[SIZE=“4”]WHAT THE HELL IS GOING ON…??:shrug:[/SIZE]