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It runs but runs rough. Used all the 350 stuff. Motor ran like a dream when I bought it. 2nd motor that's developed a #5 misfire out of no where.Is it running now? did you swap the intake/fuel system over from the 305?
Picked up a 350 pcm today so maybe swap em if rain let's up see if it idles smoother but it'll need programmed too.You could use that PCM, but it nees to be programmed with parameters for the 350.
Mite have to look into it. Hopin it's nothing internal with motor. Shouldn't be with 2 motors doin same thing. Maybe somethin in pcm lost connection. Who knows.Also, a 98 can be tuned with HP Tuners so that's an option
At that point, I would do the 0411 swap. Its easy, takes a few hours. And then you can really tune it.Mite have to look into it. Hopin it's nothing internal with motor. Shouldn't be with 2 motors doin same thing. Maybe somethin in pcm lost connection. Who knows.