I bought a 1994 LS for my son with 154000 miles. three weeks later while driving to school he stall at a light started the car and when put in gear it would stall out again. it turn out that the cam on one side snap. Iwonder if any one ever herd of this happen> thanks

 

was the engine rebuilt? the cams are ran off of chains... if someone were to torque the cam down too hard... the crank pulls the chain, the chain pulls the too-tight cam.. cam snaps off at the sprocket.





only other couple ways a cam will snap on it's own is either a: someone didn't torque the cam down properly and it sort of warped on the way down taking away some strength, b: the Head that was put on the engine didn't have proper cam bearing clearances *most likely too big* and the oil that's supposed to lubricate the spinning cam wasn't creating the correct clearances... the cam got hot on the head, snapped, or c: somehow a valve got lodge just right against a piston and backlashed against a cam lobe pushing back on the cam the wrong way... but the valve tends to bend before it snaps a cam.





or.. the engine overheated and something overheated the cam or head somehow... messing up the clearances and it snapped.





so either way it happened, you either got boned on an incorrect engine rebuild, or it's overheating for some reason.