Forgot to point out that the main webs in this crankcase were
boat-tailed at some point. You can see this in the first posted photos, but it is difficult to detect.
Disclosure: BTW, I'm not implying here boat-tailing increases horsepower.
__________________
1970 Porsche 914/6 GT > Recreation in progress...
http://www.pbase.com/9146gt/my9146gt
1970 Porsche 914/6 > Crashed, driving while sleeping (not good!)
1974 Porsche 911 Carrera > Stolen, recovered in pieces