Obviously, these valve-control-related issues, associated with insufficient valvespring pressure, are the reason why camshaft manufacturers offer valvespring upgrades. The obvious answer might seem to ...

GM small-block Chevy Vortec heads deliver great performance per dollarbut theyre still only based on production pickup-truck castings. The iron heads are heavy. They have press-in rocker-arm studs ...

In the early-'90s, GM introduced the Second-Generation LT1 small-block. It featured reverse-flow cooling and an aluminum cylinder head with a new port configuration. In essence, the company created ...