How did you get a 518 to lock up? My first gen Cummins had a well built 518, I would have loved a lock up switch Not the kind of lockup that Mike is talking about. But here is my thread on another board to turn your non lockup 518 into a lockup. http://www.dieseltruckresource.com/forum...p-cheap-318014/
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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