A VERY rookie question here:
Given that these timing wheels mount on the crankshaft, how does an EFI unit or a "coil per plug" electronic ignition that operates from a crankshaft timing wheel know that it is "time" to do their job and not one revolution away? I can understand how it would work if the timing wheel was driven off the camshaft (1/2 crankshaft speed).
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic.
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