3 core, cheapest of cheap rock auto junk. Haven't really run it hard, long enough to put it to the test but based on prior experience I think it will be fine.
Knock on wood cam doing great, oil clean, no metal in filters. Really happy the route i went.
Might drop to a 70 on the primary jets.
Still so much I want to get done right ****in now, install the tach, install the aftermarket gauges correctly, install the Wide band AFR gauge, light wiring, new tranny lines, speedo cable, 4x4 shifter, rebuild rear axle etc etc.
I have a full spool in my parts truck i installed 15 yrs ago...tempting to put that in because the one wheel sucks, but a detroit sure would be nice on street.
Also have some single rod style traction bars that came off my 76 back in the day I plan to install at some point once the lift goes on..and a nice clean tailgate with a working handle ive been sitting on for about 25 yrs.
One thing at a time.