If you are torqueing cylinders heads, I assume the engine is out of the car. Why would you need a special tool to torque the head bolts? Wouldn't any old torque wrench do the job? I'm sure Ferrari makes one and recommends that you only use this one that is unavailable, but I wouldn't worry about it. Any torque wrench will do.
Well, IIRC, it does take a special tool. The heads are held on with acorn nuts on studs, and the nuts are partially underneath some of the upper head casting. Ferrari lists special tool number AV 498, which looks like a distributor wrench. It is a box wrench that bends upward with a square drive for a torque wrench. I've gotten all my tools from GT Car Parts here in Phoenix. -Steve
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