I had a 273 with a Mopar .474/.474 cam and it sounded good but it was a "pig". It didn't run good. I dropped down to a .441/.441 lift and it ran much better. It had a smoother idle but ran much stronger. That's when I learned that having a big cam does not mean it will help far as performance. Now days I like performance over sound.. I have the same .474/.474 cam in a .030 over 360 in which it works much better in that motor because of the 10.7 compression.