Detroit Diesel 8V-71 "Nat" OEM Engine Complete Running Core V8 Cyl Diesel ESN: 8VA-365448 Model# 7087-7521 Arrangement: RC Heavy Truck DW-LS Gov. Right hand rotation from flywheel. Test ran 2-4-17: Running Core with 42-60 psi oil pressure. Runs great and has great throttle control but has lower end noise on right front bank area. See and hear this run on video!! Overhaul kits available for rebuild. Selling "Outright" as is.