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Registered
Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 4,184
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Single knock sensor bolted to the block works perfectly well. Jake Raby used to put a bracket on the bellhousing and mount there.
There's a tech note for knock sensors that says to avoiding mounting them high on the block - e.g. near the valve train. Exactly what the factory did with the 964 bridge(s).
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'77 S with '78 930 power and a few other things.
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