Doc thanks for the picture it really clears things up. The tube in the picture looks like brass fuel line for model airplanes. I have some of this and it is a lot stiffer than the copper oil gauge tube, it just kinks easier in tight radiuses. I will try making one with that. If I cant get a new/rebuilt six hole oil pump what is the rebuild kit part number?

Any small, stiff wall tube will work. the copper tubing can be used if you solder on a stiffing plate to reinforce it. Melling K66A for the 5/8 thick impeller size.
DD

Well I had the local parts store look up the oil pump. No six bolt pumps available. He tried Melling and Fed Mog, nothing, all five bolters. He did find the part number for the Melling rebuild kit but nothing in the warehouse. I have a couple of other alternatives, I will try CarQuest and Crapa tomorrow, and see what channels my machinist can come up with. If push comes to shove, can I buy a five hole'r and swap all of the guts to the six hole housing?

Just watch out for impeller thickness differences, most 5 hole pumps use the 7/8 thick impeller.
DD

Thanks Doug. I'll double chech.

If I am reading this thread correctly, one can not spray oil directly in to the oil pump gears without a 6 bolt pump. Is this correct? The pump I have is a 7/8 Melling pump.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Yes, 6 bolt pumps have 3 sealed pockets, the unused "third pocket" will be used to mount the spray tube and channel oil pressure to.
5 bolt pumps only have 2 sealed pockets so they will not support this mod.
DD

I understand that with out the 6 bolt pump the mod pictured can not be done, but is there some other place I can tap into the spray oil onto the gear?

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

On my block, there isn't even a pocket for the six hole pump to mount up with (there was some casting flash, which I ground off. Looking at it, I'd say you should be able to drill the hole and plumb it with an external oil line fed from a standard five bolt pump. Maybe the pictures will explain what I mean a little more clearly:

Before


After

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Used to own:
'82 Dodge D150
Erson 270 Cam, O/S valves, mild port work, ~9.5:1 compression

Currently fighting with an '85 VW Cabriolet

My other passion

Can we get the pictures reposted on this please? They seem to be unhosted now. Thank you.

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Rob

It is enough that Jesus died and that he died for me.

Nevermind. I got it figured out.

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Rob

It is enough that Jesus died and that he died for me.