I believe the Melling part number for the Small Block Chevrolet oil pump is a M-55. I’m a firm believer in the stock Chevrolet oil pump. Personally, I think the high volume one delivers too much oil, and the high pressure one is unnecessary if your bearing clearances are correct. I realize that there have been some mention on here about the quality of Melling pumps, but they are still my first choice. I always open up every oil pump I install for inspection and to pack it with Lubiplate 105 engine ***embly lube for easier priming. Sent from my iPhone using The H.A.M.B. mobile app
Yeah,,,,SBC is M55 . BBM is M 63 Flathead is M15 or M19 whichever volume you use . About all I know off top of my head . Tommy
Good info, why the heck to I have M10 on my mind...oh well, yes I agree about high pressure/volume. Thanks!
Are you certain that the first one in the pic is a Melling pump . Here are a few pics I have of a Melling pump I own,,,,the pump still has the metal tag on it for an identifier. Tommy
There is the "early M-55" and the "late M-55"; the late was made more lightweight for cost cutting measures, and proven to be a bad decision. I thought they changed that? I am Butch/56sedandelivery.