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3.0 Euro "lite"
John,
Your mention of your 930/09 case sent me back to Bruce Anderson's (also known as "god") 911 Performance Handbook (also known as "the Bible") for info on your motor.
For the purpose of this discussion we will call the 1980 version "Euro-lite" as it produces 188 HP and the same 175 ft.lbs of torque as the USA SC 3.0. Not the 204HP and 189 lbs of torque as does the 81-83 Euro. The explanation for these lower values for Euro-lite lies at least in part in the 8.6:1 compression ratio vs. the 9.8:1 of the more muscular 81-83 motor. But what else is different?
The valve timing is different between the two. but durations and overlaps are the same. I would think that lift is the same as well, i.e. same cams - timed differently. Might move the torque band around but not change the overall values.
It looks like anyone who owns the 81-83 with the 930/10 case has the best that Porsche had to give.
SCWDP
-Mike
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