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Oil Pumps 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. We also carry the factory cover plates with original Chrysler part numbers on them for you restoration guys. Don't forget to scroll down to the bottom of the page for attaching bolts as well. |
| Melling M-63HV High volume
oil pump assembly. Completely brand new, assembled and ready to install. Part No: M63HV - Melling M-63HV High Volume Oil Pump - New. Price: $59.95 |
| Because the Melling High Volume pumps
use taller rotors and a larger body, for proper thread depth engagement when
bolting the pump to the block, they require slightly longer bolts than a
standard pump would. 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. Part No: 109-1502 - High Strength Bolt Kit for High Volume Oil Pump - New. Price: $9.95 |
| Our ARP polished stainless steel
high volume oil pump bolt & washer kits are exactly what people mean
when they say "show quality." These are for use ONLY with Melling
High Volume oil pump, not standard. Because the Melling High Volume pumps
use taller rotors and a larger body, for proper thread depth engagement when
bolting the pump to the block, they require slightly longer bolts than a
standard pump would. We've researched the exact size needed, and sourced
them in ARP's proprietary "300" stainless
steel alloy, which are rated at a minimum 170,000 PSI... which is even stronger
than a grade 8 bolt! And, you can't beat the quality, shine and corrosion
resistance of polished stainless. Nothing resists the ravages of weather,
time and even repeated tightening and loosening like stainless. These are
truly maintenance free! They also feature a reduced diameter 3/8" drive 12pt
head for easy timing adjustments. Kit includes 4 bolts with matching
polished stainless washers. Small details like this can really make a car "show quality."
Part No: 129-1022 - Bolt Kit for High Volume Oil Pump - ARP Stainless - Price: $19.95 |
| We also offer ARP quality in a black
oxide version of the
high volume oil pump bolt & washer kits. These are for use ONLY with Melling
High Volume oil pump, not standard. Because the Melling High Volume pumps
use taller rotors and a larger body, for proper thread depth engagement when
bolting the pump to the block, they require slightly longer bolts than a
standard pump would. We've researched the exact size needed, and sourced
them in ARP's black oxide
steel alloy, which are rated at a minimum 170,000 PSI... even stronger
than a grade 8 bolt! They also feature a reduced diameter 3/8" drive 12pt
head. Kit includes 4 bolts with matching
black oxide washers. Small details like this can really make a car "show quality."
Part No: 129-1023 - Bolt Kit for High Volume Oil Pump - ARP Black Oxide - Price: $12.95 |
| Don't forget a new oil filter to go
along with your new pump. Filter may include manufacturers logo and part
number lettering (not shown in picture.) We got tired of having our new
stroker engines ready to start, and then having to run back to the parts
store (again) to get an oil filter, so we decided to start offering
them as a convenience. These are standard canister height of 5 1/2 inches.
Part No: 138-1004 - Oil Filter - Price: $7.95 |
| We also offer these hard to find
EXTRA CAPACITY Fram Wearguard 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.
Part No: 138-1005 - Fram Extra Capacity Oil Filter - Price: $14.95 |
What is the actual difference between a standard and a High Volume oil pump?
As you can see above, for the high volume version of the big block Chrysler oil pump, Melling has increased the height of the rotor assembly so that the volume or "amount" of oil that is pumped is increased by approximately 25%. In order to fit the taller rotors, the case or pump body must be increased in height as well by the same amount. In the above picture, the stock versions of the rotor and pump body are shown on the left, and the taller versions are shown on the right. Because of the height increase, it is recommended to get bolts that are longer than the stock oil pump bolts so the thread depth engagement remains the same. We offer the longer bolts in a convenient prepackaged "bolt kit" shown above. The pump uses 3 "short" bolts and one "long" one. All use split lock washers from the factory. |
| For those wanting to keep the
appearance of an original factory Chrysler oil pump, we offer original
factory Chrysler oil pump cover plates. Shown above is the difference
between a factory oil pump cover plate, and for comparison the aftermarket
Melling version. While the differences aren't huge, they are noticeable for
those doing a restoration, or those who want to keep things looking
basically original. Our factory cover plate kit includes the factory cover
plate shown on the right (with correct Chrysler casting # 2203260 ), as well
as one of the factory style oil pressure relief valve caps, which threads
into the left side of the cover plate. The aftermarket Melling relief valve
cap uses a larger style hex head, while the factory style is either square
drive or smaller 6 point hex head style. We have seen both styles used about
equally, so the kit may include either one unless specified. These are meant
to be used with our new Melling pumps. Just replace the cover plate (don't
forget to use the spring and plunger from the new Melling pump) and you will
have a brand new pump body/rotor assembly that looks nearly 100% factory.
Part No: 100-1068 - Oil pump cover plate w/ relief valve cap - Used. Price: $24.95 |
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