I have a 1997 chevy 1500 4wd, 305 v8, 190,000 miles,

3 days ago, the starter would tick, tick tick, but not turn over. I hooked my portable jump box and it would start. Napa tested the battery and alternator.....OK. 14 volts from battery, not running.
The fused link wire was corroded pretty bad.
I put a new starter and a new OEM battery cable with fused link to alternator, cleaned the battery terminal, new fuel filter. I am still having the same problem. It will start if I hook the booster box, and the battery reads 14 volts when not running. Any help is greatly appreciated.