It seems funny that someone would bail on the truck after only 20 miles since investing thousands into it.
Any way to verify the new part of the crate motor,and also verify the supplier?
There were some crate engines of questionable origin at one time.
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews