BBC heads machining

[prairiehotrodder]

I'm preparing another low buck 454 with some oval port heads. Wondering what the tool is called or whats the proper way to cut in seats for larger valves ? In the past i've had them bowl - hogged if thats the right term. I need to know going into the machine shop what i'm talking about. Also wondering about the correct procedure for installing 11/32 valves. Do you install completely new guides or just bronze liners in the existing guides ? And also how long of valves should i buy ? And whats the best deal for valves ? Hoping to run a .600 lift solid flat tappet.
Brian

[Carnut1]

Vortec pro has a very good Youtube channel on bbc heads. He gets excellent power out of worked up Chevy iron that most guys throw away.

[PRH]

To be blunt....... if the machine shop needs more instruction than just being told to put in bigger valves and 11/32 guides........ you might need to look for a different shop.

[prairiehotrodder]

plans changed in the last 2 hours. I bought some 990 rectangle port heads. Don't have them yet but i will see what they need when they get here.