They sure aren't. I found out live and in person about 1994 I guess. I had a 360 already to go in my 71 Dart. A friend who owned a salvage yard at that time knew I was a Mopar guy and called me to come get another one. That was a 71 engine. The later engine I already had was like .160 in the hole at TDC. The 71 was like .045 in the hole. That beeotch would set it on fire for what it was when I got done with it. lol
