Quote:

I got to ride in a de-stroked 318. It used the 273 crank. 305 CI like the Real Trans Am racers. I have an old mopar engine book with the build specifics. This motor was in a 69 dart. It would rev way up fast and blast off the line. This would help keep it in the winning position. I ways wanted to build one.



273 cranks had the same 3.31" stroke and journal diameters as 318's and 340's. The Trans Am cranks had something like a 2.96" stroke.

One problem with a stroked 273 is that despite the extra cubic inches, the bore size would limit valve size and breathing. I would think that it would make a lot more torque.