I HAVE PUT A 1996 FIREBIRD ENGINE,COMPUTER,EXHAUST,GUAGE CLUSTER IN MY 36 CHEV.AM GETTING NO FAULT CODES.ENGINE FUEL PRESSURE IS TO SPEC,VACUUM IS TO SPEC,ENGINE STARTS FINE,RUNS FOR ABOUT 30 SECONDS RPM GOES UP ENGINE QUITS,ENGINE WILL START UP RIGHT AWAY.I PUT A STETHOSCOPE ON THE FUEL INJECTORS AT START INJECTORS ARE CLICKING OK FOR ABOUT 30 SECONDS THEN STOP ENGINE ACCELERATES THEN STOPS.I HAVE TRIED ALL THAT I KNOW AND ALL MY FRIENDS KNOW.I WOULD APPRECIATE ANY INPUT.