Introduction to Camshafts and Pre-Machined Cores

camshafts billy godbold and lakespeed camshafts are really neat you know you start looking at it and people think that cam designers design lobes they don't they design the valve motion so we designed a camera designing valve motion but when you design the bowel motion you figure out okay what's wrong with the valve to do here's the rocker you back it through the system it's through something called you know my background is physics you call it a coordinate transformation back to how the lifter needs to move and that creates this cam surface profile that you need to grind well you've got to grind it on something so what we do instead of starting with a bar of steel what we'll do is we'll start out with a bar of steel that's already got the lobe spaced out the journal the gear made the journals ground the front work done in work done and all it's left to do is grind the finished lobes on it so when you look at a camcore like this you know it has the front work done the rear work done the journal's turned everything's made on this but the camshaft lobes aren't ground so this would be a cam core i believe that's for a four-cylinder echo boost if you look at this this is for a ford modular 4.6 or 5.4 those are not fun to change nope