Heath, FYI I just looked at my stripped 6.9 block and that plug is there under the oil cooler front header. Thanks for the pictures and writeup. I am following behind you with my own rebuild.

Exhaust; 1.595 Head Diameter,Stellite Face,NOTE: Recommend For Turbo Updated Engine. Valve Has 0.010 Larger Margin To Save Seat Replacement, Early Heads That Use C1 Valves W/ Large Margins Will Need Seat Replacement To Attain Correct Installed Height, +15 O/S Stem Available
I found an older photo and saw that plug there before the block went to the machine shop. Thanks again.Heath, FYI I just looked at my stripped 6.9 block and that plug is there under the oil cooler front header. Thanks for the pictures and writeup. I am following behind you with my own rebuild.
Heath, you are the man...Verry nice pic's and info, I to am learning from your build for mine. keep the updates coming..
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