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Some guy
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I think the Mellings pumps have an "M" before the 77HV on the tag. They have various numbers on the casting,, I looked at a couple of used ones that were sitting around, but neither has 77HV on the casting,,
 

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AKA OhOneWS6
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Discussion Starter #3 (Edited)
So you have a couple you know for sure are Mellings with out the 77HV cast into the housing? I would like to figure out what it is to get the correct pickup for the new pan. Guess I can change the pump too. I kinda hate to. It held good oil pressure last summer.
 

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Some guy
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So you have a couple you know for sure are Mellings with out the 77HV cast into the housing? I would like to figure out what it is to get the correct pickup for the new pan. Guess I can change the pump too. I kinda hate to. It held good oil pressure last summer.
The pickup will be the same regardless, I think. I don't use very many standard volume pumps, but I think the pickup location is the same on big block Chevy pumps, unlike the small blocks that have some different size pickup tubes.
 

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AKA OhOneWS6
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Discussion Starter #5 (Edited)
The pickup will be the same regardless, I think. I don't use very many standard volume pumps, but I think the pickup location is the same on big block Chevy pumps, unlike the small blocks that have some different size pickup tubes.

Thanks Barry. Looking at Rex's B&B pan thread there are a few different pickups depending on which pump is used. That is Gen IV stuff though. Jeg's tech said the same thing about my Gen 6 via chat. I am not clear what the difference is between the pickups.
 

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Thanks Barry. Looking at Rex's B&B pan thread there are a few different pickups depending on which pump is used. That is Gen IV stuff though. Jeg's tech said the same thing about my Gen 6 via chat. I am not clear what the difference is between the pickups.
Some pumps have M77 cast into them, but not all of them.


Almost all Mellings Pumps have USA cast into them. But I understand the newer "standard" M77 may not, and may not being cast here.



There is no difference in the pickups for a standard M77 and a M77HV.

The pickup you have appears to be a Mellings 305S And I don;t like them. They seem to have a tendency to create a vortex. Perfectly round pickups seem to work better if they have a baffle plate like the stock GM pickup. Any other shape than round seems to be OK.




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Matt it looks like that Pickup made have been produced or modified from an aftermarket replacement (Napa etc)
I agree Tom. Most of the pickups you get from auto parts stores are either Mellings, or clones of the Mellings pickups.

Another view of the Mellings 305s pickup.



There is a possibilty the pump is made by a company called Qualcast that uses Mellings part #s without the M, Their part number for a BBC HV pump is 80-77HV but only the 77HV is on the part. The 80 simply identifies the part as an oil pump.

LINK: Qualcast



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I agree Tom. Most of the pickups you get from auto parts stores are either Mellings, or clones of the Mellings pickups.

Another view of the Mellings 305s pickup.
Bob we utilize these (Napa) over some that are offered in the after mkt due to general design and shape , personally dont care for the little rectangular "jobbies" and if correct for the pan depth these work well , I think the original app that works with jet pans was some BBC Corvette and Chevelles (7 7/8 +or- pan depth) Tom
 

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Question! What pan are you taking off and which pan are you putting on! Reason for the question is I installed a pan on a BBC over the weekend! Pictures will tell the story!
 

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Mellings and others make similar pickups. I perfer the ones that have a baffle plate across the screen as opposed to the full round exposed screen. Mellings makes them both ways. Can't explain it, but they seem to hold oil pressure better at elevated Rs. Say above 6000 with a HV pump. Also, its almost impossible to get the pickup to close to the bottom of the pan. The baffle shield will hit first.





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That oil pump looks like the off shore one's that procomp and other companys sell. I have seen alot of them , and the part number is just 77-hv.
 

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Bob we utilize these (Napa) over some that are offered in the after mkt due to general design and shape , personally dont care for the little rectangular "jobbies" and if correct for the pan depth these work well , I think the original app that works with jet pans was some BBC Corvette and Chevelles (7 7/8 +or- pan depth) Tom
Tom, the reason for requesting a picture is that some windage trays will accept a rectangular pick-up and some will accept both. On a BBC with a standard depth pan I like the s-77 pick-up which is windowed and not an open 360 degree screen. But again it depends on the windage tray used.
 

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Tom, the reason for requesting a picture is that some windage trays will accept a rectangular pick-up and some will accept both. On a BBC with a standard depth pan I like the s-77 pick-up which is windowed and not an open 360 degree screen. But again it depends on the windage tray used.
:thumb:
The S77 pickup is very similar to the OEM GM pickup and its an excellent design. You do need to be a little more carefull about the distance from the bottom, but no more than most piCkups. It does require a little more room in the pan than some designs, and it may interfere with the swing gates in some pans. But it is an excellent pickup.

Lot of people think the window restricts oil flow. IT DOESN'T!





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:thumb:
The S77 pickup is very similar to the OEM GM pickup and its an excellent design. You do need to be a little more carefull about the distance from the bottom, but no more than most piCkups. It does require a little more room in the pan than some designs, and it may interfere with the swing gates in some pans. But it is an excellent pickup.

Lot of people think the window restricts oil flow. IT DOESN'T!

I agree That design will actually increase oil flow into the pump. But the reason I asked to see the pan and windage tray was to see if he is using a rectangular pick-up to clear the windage tray.
 

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AKA OhOneWS6
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Discussion Starter #16 (Edited)
Here is the pan that this pickup was being used with. The pickup is open on the bottom with just the screen. It held great oil pressure last season. It is a bone stock Gen 6 454. I found some rust and pitting on the outside of the pan that I do not like while I had the motor out. If it was not for this rust I would not be changing it. I hesitate to even post my choice on the new pan. There are a lot of opinions on anything to do with oil or oiling systems. Again, according to the PO (with a receipt showing the same) this is a bone stock remain 454 purchased from Indmar about 10 years ago. I plan to use the Jegs branded 11 qt pan.



 

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Here is the pan that this pickup was being used with. The pickup is open on the bottom with just the screen. It held great oil pressure last season. It is a bone stock Gen 6 454. I found some rust and pitting on the outside of the pan that I do not like while I had the motor out. If it was not for this rust I would not be changing it. I hesitate to even post my choice on the new pan. There are a lot of opinions on anything to do with oil or oiling systems. Again, according to the PO (with a receipt showing the same) this is a bone stock remain 454 purchased from Indmar about 10 years ago. I plan to use the Jegs branded 11 qt pan.
Matt your current pan looks to be a "sectioned" OEM pan someone added to the sump area regarding the rust , some elbow grease and some Naval Jelly , CRL or even Chrome wheel cleaner will knock that down , regarding the "Jegs" pan hopefully the pan depth doesnt exceed 7 3/4 to maybe 8" ?
 

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AKA OhOneWS6
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Discussion Starter #18
Matt your current pan looks to be a "sectioned" OEM pan someone added to the sump area regarding the rust , some elbow grease and some Naval Jelly , CRL or even Chrome wheel cleaner will knock that down , regarding the "Jegs" pan hopefully the pan depth doesnt exceed 7 3/4 to maybe 8" ?
Thanks Tom. The pitting is deeper than that. I could clean it up but I would never trust it. The pitting is pretty substantial in a couple of places. The pictures do not do justice to the damage. The Jegs pan is 8" deep. Mine existing pan is 7 7/8" I am pretty confident it will clear.
 

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Thanks Tom. The pitting is deeper than that. I could clean it up but I would never trust it. The pitting is pretty substantial in a couple of places. The pictures do not do justice to the damage. The Jegs pan is 8" deep. Mine existing pan is 7 7/8" I am pretty confident it will clear.
Eight inches can be edgy depending on engine mounting , engine position etc n we counterbore intakes to reduce the height of the intake screws (to gain clearance)
 

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AKA OhOneWS6
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Discussion Starter #20
Thanks Tom. I looked at it before the motor was pulled. I believe the pan will clear. This boat has a full set back. The front intake bolts are about even with the flywheel. I am 99% positive the rear of the pan is forward of the intake. I guess I am going to order a new oil pump and pickup just so I know for sure what I have. Thanks for the input fellas.
 
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