Currently running a stock 455 with eldobrock intake and holley sniper TH400 transmission, 3:42 gear. I was wanting to change the camshaft to something with a nice thump to it. I was looking at TA performance and seen the 284-88h cam that I don't have to change the valve springs and other stuff that comes with it. I love the sound of the Comp cam Thumper camshaft is there anyone running a thumper camshaft or a 284-88h camshaft or something close to the thumper. What are your pros and cons of the camshafts what would be the best camshaft for me to run on a stock engine.