[grivera]

That SD pick up looks like it would be restrictive - maybe it's an optical illusion

[rohrt]

I bought a mellings 60psi pump and did the mods with the smaller checkball and the washer shim behind the spring. I also added the 1/4" thick bottom plate from NightMare performance.

My pump now shows 80 psi almost all the time now. I put in a really thin oil and got it down to 70psi hot. No idea why its 20 psi higher. I guess I will just live with it, betten then too low.

[Dragncar]

Originally Posted by P@blo

Dragncar, your pump picture with the thick cast bottom plate looks like the countersunk holes were slotted to the right to get the holes to line up but could be just shadows. If there has been a massage, not sure I would be keen on that once going with weaker CI over steel is factored in.

Appears as though the Precision pump uses the thin steel plate. Not exactly clear on the rational for doubling up the thin steel plate either other than a feel good.

What ? not sure what you are talking about. But no pump I modify ever gets the bottom plate they come with. They get a 1/4" thick precision ground steel plate with straight holes so I can use a 1/8" steel strap to secure the custom pickup I make myself.
The whole point of that picture is to notice just how thick the iron is around the boss for the pickup tube. Its VERY thick with enough material to drill out for a 1" Ford pickup tube.
Then I will buy a Melling select pump and swap out the gears because those gears are not iron, but steel and coated.
I will end up with a pump FAR better than any Precision Pump, Butler pump or any other pump other than a Luhn pump, which are the best.( maybe a Titan ? but not sure) The folks at Luhn are one of the people who taught me how to modify my pumps.
Why I bought this HOOF pump ? You can not find them new anymore. Only the Melling pumps and there is not enough iron and the hole is not centered anyway. So they are unusable for my needs.

[John Milner]

I would be careful choosing what oil pump shaft you run with your new oil pump. I can't recommend a Melling oil pump shaft. Mine just barely made it through engine break in before it decided it wanted to split.

[PAUL K]

Originally Posted by Dragncar

What ? not sure what you are talking about. But no pump I modify ever gets the bottom plate they come with. They get a 1/4" thick precision ground steel plate with straight holes so I can use a 1/8" steel strap to secure the custom pickup I make myself.
The whole point of that picture is to notice just how thick the iron is around the boss for the pickup tube. Its VERY thick with enough material to drill out for a 1" Ford pickup tube.
Then I will buy a Melling select pump and swap out the gears because those gears are not iron, but steel and coated.
I will end up with a pump FAR better than any Precision Pump, Butler pump or any other pump other than a Luhn pump, which are the best.( maybe a Titan ? but not sure) The folks at Luhn are one of the people who taught me how to modify my pumps.
Why I bought this HOOF pump ? You can not find them new anymore. Only the Melling pumps and there is not enough iron and the hole is not centered anyway. So they are unusable for my needs.

What is the point of buying the select pump if you toss the gears?

[65 Lamnas]

If I'd known about the Luhn pump, I'd have bought one for my current engine. It's the closest thing to a hi-volume pump for a Pontiac without having to pony up for a Titan.

http://www.luhnperformance.com/pontiac.html
https://www.bopengineering.com/A_Pon..._Related.shtml

https://butlerperformance.com/i-2445...OxPEL9E4SZa_HK