Anyone who's read my posts probably knows I'm a big fan of Jim Lehart at Central Vrginia Machine. Recently when I had a cracked head and subsequent failed repair on the Beast, I ordered a set of Edelbrock Heads from him with their basic "Sportsman" port work. They are indeed things of beauty. I took a few photos of the port work - hopefully now the reasons for my positive outlook on Jim and Dave at CVMS will become more evident.
Viton seals and hardened steel spring cups, installed height of each valve spring precisely measured. Not that difficult to do, but many builders don't invest the time and effort to do this.
Precise intake port shape. Notice the work around the "back side" of the intake valve guide. This helps to impart swirl to the incoming charge.
Look at how much of the intake valve seat/opening is visible looking through the port. Think these might flow a little air?
Valve bowl/seat area. Notice the extra work around the edge of the chamber to unshroud the intake valve. This is extremely important for flow at low lifts when the valve is barely off its seat.
Closeup of intake seat. See how smoothly the bowl transitions into the seat? Niiice...
Likewise on the exhaust seat. The chamber boundary has been opened up a little here too for un-shrouding purposes.
Continuing the path out through the exhaust port. You can see the areas that have been smoothed and shaped.
The valves. Edelbrock heads out of the box use 2.11 intakes and 1.66 exhausts. These are "bigger than that"