Posting something I think some of you might find interesting. I found this while searching USAHEC bored. Sorry if this has been posted before and this isn't the right topic, This my first time posting here. Somewhat tank related.
[FINAL REPORT] NATO STANDARD ENGINE LABORATORY TEST OF THE AVDS-1790-8AR SERIES ENGINE
https://emu.usahec.org/alma/multimedia/1084264/20184784MN000744.pdf
FINAL REPORT
NATO STANDARD ENGINE LABORATORY TEST OF THE AVDS-1790-8AR SERIES ENGINE
ENGINE: Serial No. 0002
TEST COMPLETED: October 26, 1983
TELEDYNE CONTINENTAL MOTORS General Products Division
PUBLISHED: February 1984
WRITTEN BY: Stanley Gorecki
160 Pages
some screenshots: