*Edit: Found it, looks like I have 401 valves and need a 1.60 installed height. But still open to any wisdom you can offer. Can any tell me the diameter of valves in a 401? I have a 1957 364 that was rebuilt some time ago, the valves in my 364 measure 1.872 and 1.500 at their widest diameter, slightly larger than stock, if I'm correctly informed. So if I have 401 valves, I also need to adjust the spring height to 1.6. Please tell me if there's an error in my information.
The Jalopy Journal
