There were two different 4.3's for a couple years I believe 92-95. It was NOT tbi. It was CPI. The vin code for that engine was W. The TBI vin code was Z.
here is a picture -
As far as I know this version was never available in the pick ups but that engine does have a crank sensor.
here is a picture -
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As far as I know this version was never available in the pick ups but that engine does have a crank sensor.