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72bowtiestepper · 03-19-2017, 10:13 AM

If you are refering to the threaded hole in the block behind the distributor
(1/8 -27 thread)--that is for your oil pressure sensor or oil pressure line to gauge. Don't start your engine with this hole open....you will have a HUGE oil leak !

03-19-2017, 10:13 AM	#2
72bowtiestepper Registered User Join Date: Feb 2013 Location: Northwest NJ Posts: 684	Re: Finishing Up a 350 Reuild If you are refering to the threaded hole in the block behind the distributor (1/8 -27 thread)--that is for your oil pressure sensor or oil pressure line to gauge. Don't start your engine with this hole open....you will have a HUGE oil leak !