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cas3 · 03-07-2021, 05:34 PM

the original ports on the back of the block were 1/4" pipe, but most 95% systems drill them to 3/8 pipe so you have room to get a tap in there for the grub screw threads

03-07-2021, 05:34 PM	#9
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,578	Re: Installing 95% oil filter system issue the original ports on the back of the block were 1/4" pipe, but most 95% systems drill them to 3/8 pipe so you have room to get a tap in there for the grub screw threads