Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. For most all applications, we recommend the high volume unit, M63HV. Aside from the billet and aluminum racing pumps made by Milodon, Keith Black and others, Melling is THE only source for stock replacement type cast iron pumps. Don't forget the attaching bolts for your new pump also.
Melling M-63HV High volume oil pump assembly. For engines with extended capacity (deep sump) pans, we recommend the Melling high volume pump. Completely brand new, assembled and ready to install. Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. Aside from the billet and aluminum racing pumps made by Milodon, Keith Black and others, Melling is THE only source for stock replacement type cast iron pumps. Don't forget gaskets and attaching bolts as well (listed separately.)
Melling M-63HP High Pressure oil pump assembly. For engines which have factory capacity oil pans, we have found that the high volume pump can sometimes suck the pan dry, resulting in bearing damage. For those factory capacity (non deep sump) engines, the high pressure pump is a great alternative. You still get the added benefit of oil which is being pumped at a higher pressure, without the added volume which can suck the smaller capacity pans dry. Completely brand new, assembled and ready to install. Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. Don't forget gaskets and attaching bolts as well (listed separately.)
Our Performance 12 point bolt kits are a nice looking option that features grade 8 strength, black oxide coating, and with a price that doesn't break the bank. This kit includes all the bolts you need to attach a Melling HIGH VOLUME (M63HV) Oil Pump to the engine block. Custom matching, small diameter washers are also included with this kit.
Our Performance 12 point bolt kits are a nice looking option that features grade 8 strength, black oxide coating, and with a price that doesn't break the bank. This kit includes all the bolts you need to attach a factory oil pump, Melling stock replacment (M63) or Melling HIGH PRESSURE (M63HP) Oil Pump to the engine block. Custom matching, small diameter washers are also included with this kit.
We offer this bolt kit for Melling M63HP HIGH PRESSURE or the factory stock Oil Pumps. We've researched the exact size needed, sourced the bolts in a high strength Grade 8 fully plated version, and packaged them into a neat kit complete with plated split washers, just like the factory used.
We now offer replacement oil pump gaskets. For some strange reason, these are not offered separately or included in ANY gasket sets from any of the major gasket suppliers such as Fel-pro, Victor, Rol, etc, and they are nearly impossible to find. Many of the gasket companies list "Oil Pump Gasket" in their catalogs, but under the description, the part is listed as an "o-ring", so it is actually the standard rubber o-ring which fits around the drive area of the pump, not the gasket. So, we've sourced these hard to find gaskets and now offer them for sale separately. Another "pain in the butt" big block Mopar problem made simple and inexpensive by 440 Source!
This is the replacement o-ring which fits around the shaft of the oil pump which slides up into the block. Great for replacing missing, damaged or dried out/cracked originals.
Our oil pump priming shafts are perfect for priming your engine before that first startup. These specially hardened steel priming shafts fit on any 3/8 in. or larger drill and will pressurize oil galleys to ensure against dry starts and ruining your engine. Don't fire up that engine without pre-lubing (priming) it thoroughly with oil and our oil pump priming shafts. Compare to Mopar Performance P4286800.
Our new adjustable oil pressure relief valve is a great accessory for your big block Mopar. This unit simply screws in and replaces the original plug which holds in the oil pressure relief plunger and spring. This plug is drilled and tapped in the center with an adjusting screw which can be screwed in or out as desired. The screw is surrounded by a special liquid tight o-ring seal to eliminate leaks, and held in place by a nylon lock nut & washer.
Screwing the plug in will put more pressure on the relief spring and raise the oil pressure, while screwing the plug out will release the pressure on the spring, and cause the oil pressure to drop. You can use this to adjust your oil pressure where you like it (within a reasonable range), even while the engine is running! (Challenge your Chevy buddies to try that one!) Works great for offsetting pressure loss or gain from specific bearing clearances, certain oil viscosities, etc, etc. Works with ALL oil pumps including factory pumps, aftermarket Melling pumps and Racing style billet aluminum pumps.
We offer oil pressure sending units. There were two different types used. This one is for cars which came from the factory with oil pressure gauges (not lights.) Use the other type (listed below) for cars which came with idiot lights.
We offer oil pressure sending units. There were two different types used. This one is for cars which came from the factory with oil pressure "Idiot lights" (not gauges.) Use the other type (listed separately) for cars which came with factory gauges.
We also offer these hard to find EXTRA CAPACITY genuine Wix oil filters. The canister height on these has been increased an extra 1 1/2 inches, to about 7 inches to make sure the oil pump has plenty of capacity. Other than a deep sump oil pan, this is the only way to increase the capacity of your oil system, and it's kept right at the supply side of the oil pump, just where it's needed most. A nice detail and an inexpensive way to get a little extra oil that most builders overlook. Don't forget to check to make sure you have clearance in the chassis for the extra length.
Big block Mopars generally have a very good oiling system from the factory. However, one easy modification recommended by Mopar Performance is to enlarge the passages which go from the passenger side main oil galley to the main bearings. This allows extra oil to both the main and rod bearings, and only takes a few minutes to do with any hand drill. We carry the special 12" long drill bit required, which should be a standard part in any mechanic's tool box who is building high performance big block Mopar engines. Click on the "view additional images" button to see a diagram of which exact oil passages to enlarge with this drill bit.
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440 Source Inc.
3680 Research Way Carson City, NV 89706
775.883.2590 / Sales@440source.com
