Yeah it did, the compression ratio that is, the cast crank was in the 1973, I don't think it was in the 72 maybe late ones. But the cast crank was actually better then the steel one back then. It was said to be the nicest balancing on the circuit at the time. But today, I would go with a steel eagle from Mancini Racing and H beam rods. Some of the old MoPar steel cranks were badly forged and balancing holes were drilled everywhere some would not seal without rope seals and in some cases more balancing. But strong yeah! Lighter no! And much harder on rod end play wear. Today's technology is great, it just cost a fortune. :burnout:The 340 I had along time ago was factory except for the headman headers and it had to be timed at 1 degree ATDC in Southern Cal. because of the compression ratio and would top at 135 MPH with that timing, but man did it get there quick, it was a 1970 model.