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In both cases I had smoothed the ports and eliminated humps and bumps in the
intake passages. I'm using the standard pipefitter's nightmare combined
manifold with secondary butterflies and shafts removed, holes plugged.
F head with about 0.080"/2mm off, standard thin headgasket. HIF6 carbs.
You gotta remember that most cams you take out of these are in bad shape on
several lobes, and mine were no exception.
From idle to about 2000 rpm there was little or no difference but from about
2500 up till it gets scary the torque was impressively greater. Not quite to
the point of smoking the tires but if there is loose grit, sand or gravel on
the pavement it will easily break traction, also if it is damp or dusty.
I imagine that with FI the high end torque would be even better.
Remember that at least for a Volvo this is a pretty heavy car. Also remember
that the stock cam for a B30 is the C grind, which is moderate by any standards.
I also have the 3.31 rear end that was standard in 1969. This makes the OD
I installed somewhat less useful below about 75 mph. On the other hand it
does delay the shift points quite a bit and makes 3rd gear a 4.33 ratio, which
is nice.
--
George Downs Bartlesville, Heart of the USA!
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