I wanted a big block, also. Got the same answer. 318 was enough trouble for me. Now that I have a 17 yo I get it. I guess......1981 it was a 73 340 4 speed Challenger with engine just built for 600 bucks. It needed all 4 ball joints with only 67k on it. I was trying to get a 440 six barrel Cuda but my mother said it was too much for my first car. Little did she know how much was done to that little 340!