I am hoping someone can help me solve this mystery.
The Cat 3116 was rebuilt in my truck It is a serial# 7SF18670
The plate on the engine has a hand etched changed over the power number to 215 and the perf spec shows OT9306.
I am trying to sort out what model year this engine really is as I want to add an exhaust brake on top of my Telma installation adventure. If the engine is the 1991 model it wont take the exhaust brake.
I had the not so great pleasure of lighting up the brakes on the last trip back from the track on a 5 mile long 6% grade and want a back up plan if it goes wrong.