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spuggy spuggy is offline
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Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 2,830
All discussed before, at length. Much more information in those threads than I'll give ya

930 heads are a different alloy, withstands higher temperatures better. Many have used N/A heads to avoid massive porting of the 930 heads, but they may not last as long in full-race applications. This may be dependant on proper tuning and sane limits in other areas to control temps.

Small ports are for off-boost torque - irrelevant on a race motor. Depends on your intended use which you choose. Note that Frere says that the 935 "baby" retired on the first outing, at least partly because it was so intractable as to be bordering on undrivable. And that's on a race track.

I've read that the 3.0 930 is a lot "peakier" than the torque monster 3.3's, but I've never driven one...

My $0.02? Whatever heads you use, twin plug them while they're out. That way, you won't regret it later...
'77 S with '78 930 power and a few other things.
Old 12-25-2007, 07:53 AM
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