Seller notes

This listing is for a brand new stock oil pump from Melling that is made in the USA. The M77G oil pump has a 10 PSI higher bypass setting than the standard M77 oil pump. Oil Pump Part Number: M77G Outlet Tube Diameter: 3/4" Shaft Part Number: IS77 Length: 6.72" Diameter: 0.483" It fits the following big block Chevrolet and GMC engines in trucks. 366 CID (6.0L) 1966-1990 All 396 CID (6.5L) 1965-1971 All 402 CID (6.6L) 1970-1972 All 427 CID (7.0L) 1966-1990 All 454 CID (7.4L) 1970-1990 All . Click...

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