Sorry guys, I got another question for you. Stop me if I'm asking too much.

I stuck with the small port 270 head, bigger valves, hardened exhaust seats, 3-angle grind. Here's the question: at what angle should the sealing surface on the exhaust valve seats be? The original angle was 30 degrees, however the standard practice on most motors today is 45 degrees. What should I do? Are there any advantages/ disadvantages to the 45 opposed to the 30?

Thanks a bunch guys! I appreciate all the advice, it really helps. I wish I could contribute more to the sight, all I really ever seem to do is take, take, take. I don't have much to give...

Pete

Last edited by BlackJackPG; 03/06/13 02:06 AM.
--Peter Gray: #6073--

"If at first you don't succeed,
Try, try again."
-William Edward Hickson