Is the standard knock sensor for a standard TPI 350 the one to use or is there another one that gives better results? I vaguely remember something about using the LT4 one or was that for a ZZ4 engine or something??

 

The LT4 knock module is for the LT1/4 PCM, and is only the filter, not the sensor. It's not applicable to a TPI motor. Some people have had minor success in desensitizing the knock sensor using a small amount of teflon tape to absorb vibrations, and others have used some resistors spliced in with the KS. Only do this if you're sure that the knock you're seeing is false, though!

 

Does anyone have the right part number for the knock sensor for the '88 350?