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Just be thankful you're not doing the camshafts of a B27 in a 260! Seriously you will be turning alot of little bolts, some will break and some will come out with threads on them if they've corroded over time. I don't know what your climate is like but here in the USA our northern states use salt, calcium and other dreadful chemicals on the roads during the winter and this really wreaks havoc on alloy engines. If you're going to undertake this yourself just take your time, have a blowtorch handy along with a small hammer. Heating the area gently to almost hot to touch will expand the aluminum then tapping on the head of the bolt will knock the internal corrosion a little and giving you a chance at getting them out. This job however should NOT be done with the engine in the car as front clearance is already tight with the engine sitting so far forward.
I have no idea what possesed Volvo at the moment the V6 engines were put into production but it wasn't good! Dont get me wrong my kids 240 (265DL) wagon with his older B27/M46 goes like HELL with the performance cams however it was a nightmare on an engine stand during our post crash inspection.
Ever thought of ditching the V6 and going with a B23?
B988
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