No one was more surprised than Dr. Rick Dearman when he was diagnosed with severe symptomatic aortic stenosis, also known as heart valve failure. As a heart surgeon, he’d treated hundreds of people ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...