Full Floater Posted 2 hours ago Share Posted 2 hours ago I have a previously good running 866, that has dropped a valve seat. I realize that most parts are near obsolete for these now, but if there are any lingering upper gasket sets out there somewhere that can be had, I will give this particular engine another chance before it's pulled and parted out. Any current leads on 866 head and manifold gasket sets? Quote Link to comment https://www.bigmacktrucks.com/topic/76116-866-v8-gasket-set-locating/ Share on other sites More sharing options...
Joey Mack Posted 38 minutes ago Share Posted 38 minutes ago all I can offer is part numbers. 126SB 181A,,,, and 126SB 182A.. gasket kits for that engine. Quote Link to comment https://www.bigmacktrucks.com/topic/76116-866-v8-gasket-set-locating/#findComment-585321 Share on other sites More sharing options...
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