Confused newbee with a 273

welcome 273 is fun little motor that is hard to kill. When my buddy put the 440 in my old 68 dart they placed it in neutral set the e brake and droped a cinder block on the gas pedal. Went in the house........It finally died after 15 min. Let it cool off and did it again. After about 4-5 times they gave up on blowing it up. Tough tough motor.