Running beehive springs on vortec heads for more lift
Switching over to beehive springs on vortec heads is probably the easiest way to unlock the actual potential of those old 906 or 062 castings without heading straight to a machine shop. If you've ever messed with a Small Block Chevy, you know that Vortec heads are legendary for their flow-to-dollar ratio, but they come with a pretty annoying Achilles' heel: the valve lift limitation. Out of the box, most of these heads start to run into clearance issues once you get anywhere near .450" to .470" of lift. That's where the beehive setup comes in to save the day, and honestly, it's a bit of a game-changer for budget builds. ...