Back in my immature days (1990-ish) I had a 1979 GMC Sierra 1500 with a 2" lift and a warmed over 350. It had a small crane cam, aluminum intake and Edelbrock carb with headers. I built the motor myself and probably had a couple thousand miles on it by this time. Left a bar one night with friends and went to a local mud hole. There was a long pit about 50-75' long. Being a little on the drunk side I put it in 4 lo and floored it. Truck bogged and stalled. Buddy that was with me couldn't pull me out so next day my cousin came out with his F250 and pulled me out. Had to replace the battery cause it wouldn't start that day. Truck wouldn't run right so pulled valve covers and had a couple of bent pushrods. Replaced those and engine was fine. Shortly after the transfer case started making noise so replaced that too. Buddy said it sounded like I hit about 7000 RPM before I hit that hole...lol. That was the last time I off-roaded anything