Reuse your old 305 distributor.
The 327 cubic inch Chevrolet's distributor had points and condenser and not an ignition module. If you have an ignition module then you have a HEI distributor that was changed out.
The spark travels from the coil to the distributor then from the distributor to the plugs. So if you have spark going into the distributor but not coming out to the plugs, I would blame the distributor cap and rotor being at fault.
The oil pressure switch is located at the back of the engine next to the distributor. Looking at it from the front of truck it will be right of distributor. Normally it can be changed without removing the distributor.
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And you still have a skip? Probably a bad injector.
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no
The magnetic plate in the distributor shaft, for the pick up coil, may be cracked.
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Yes, a 1997 Chevy Cavalier does have a distributor cap. The distributor does not have points and a condenser. This part is one electronic unit.
It is mounted on the left rear top side of the intake. It will have a plug wire coming out of it and going to the distributor cap.
it might be the wiring harness for the electronic control module for the distributer if it is and hei distibuter