Building a set of W2 heads

If you havent bought valves yet, and we know those guides probably need adjusting anyways, get the 11/32 valves. Make sure what length you need, long valve heads or stock ?

If they are stock valve length heads, use +.100 over stock chevy length.
If they are long valve heads, talk to a sales rep and let them know.
They are a lighter nail head design that doesnt impede flow as =much as the fat 3/8 stem does.