My starting point is 340 valve spring. Used is fine. Did you decide on a cam? You really need to consider that. Stock installed height is around 1.69 inches.
Still working on that. I have a cam I got years ago for a small block. All I know about it is, hydraulic & .450" lift. Its got these numbers stamped on it 458230 any ideas "
I'm going to post those numbers, see if I get anything.
What to you think about the stock 340 cam, for a low rpm driver 273? to much/ bad choice ?