Patricks antique cars sells at least 3 different grinds- The howard m4f (most common), and two other grinds.
Clifford sells a 260M cam, and its pretty radical, choppy idle. Not much power below 1800 RPM, but will pull on the top end until the motor blows. I used to run one in a 235, but I overrevved it and blew it up.
I'm running the M4F cam in my new cammed-n-jammed 235, and I like it a lot. Your results may vary. I think a cam with more duration than the m4F, which is around 210, will require increased compression to retain low end power.
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