The SOHC/4 World Tour is in under way.
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I should have been clearer with my comment, I was comparing the auto head to the later K (75-78) and 75-76F heads and not the earlier heads. In general for performance builds I like the later heads.
The 75/76 K did NOT use the -392 head. That evolved from the 75/76 F to the 77/78 K engine.
Well, I'm sure yall thought this was not going to happen, haha, we'll see! Met my goal of having Purple Rain as ready as possible by the 29th. So I could start back on this! We going 750 A racing also, I've got a ton to do,so see ya, Bill