Well, guys ...
The specs are close, but not identical!
1965-66 Solex cams: In - 244 deg. 0.439" Ex - 234 deg. 0.406" Intake opens 52 degrees Before TDC, and Exhaust closes 44 degrees After TDC, yielding an overlap of 96 degrees.
'E' cams: In - 229 deg. 0.408" Ex - 223 deg. 0.393" Intake opens 29 degrees Before TDC, and Exhaust closes 19 degrees After TDC, yielding an overlap of 48 degrees.
What is 'best' is a very subjective evaluation ... Bruce Anderson likes the Solex cams in a carbed 2.7 application. For further discussion of cams, including 'S' and GE-60 grinds refer to this post:
http://www.pelicanparts.com/ultimate/Forum3/HTML/009740.html
It is an interesting phenomenon, and maybe you have never driven a later, 2.4 'E' or 'S', or RS 2.7, but as displacement is increased a 'wilder' cam grind becomes tame ... the 2.4E power peak is at 6200 rpm, but the RS 2.7 engine using 'S' cams has its' power peak at only 6300 rpm!
Of course, gearing is also a factor, but I favor the 'S' or GE-60 cams in any carbed or MFI engine over 2.4 liters!
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Warren Hall
1973 911S Targa