I Built My Own Spin-On Oil Filter Adapter

[Mulana]

I decided to build a spin-on oil filter adapter for my 432, and what a headache that was!! I am fortunate to have access to an engine-lathe to turn the aluminum disc, an indexing head to space the holes equally, and a sturdy drill press to bore out the holes. The engine-lathe was too worn out to cut threads, so I had to hire a machine shop for those jobs. They turned the straight pipe nipple and the internal threads on the adapter, and they easily proved to be the most expensive part of the build. All in, including the cost of my mistakes and starting over, I have spent around $400-$500. I have not tried it yet, but I am confident it will work fine. If I had to do it again, I probably wouldn't due to the amount of work involved and the expense. Off and on, it took about two years to complete.

[James]

This is what I had done for a spin on oil filter. I couldn't use a long filter like the one you have, cause the exhaust pipe was in the way. I can use any SBC or BBC oil filters.
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[Mulana]

I haven't even thought about that. I'm sure there is a shorter filter out there. Thanks for letting me know.

[Judge]

New to the forum. Currently in process of restoring a 1961 gmc long bed that I found in rust free Montana. Was hoping someone had the measurements for making the spin on filter adaptor.

[James]

New to the forum. Currently in process of restoring a 1961 gmc long bed that I found in rust free Montana. Was hoping someone had the measurements for making the spin on filter adaptor.

I drew mine up in eMachineShop. It a semi-easy free 3D CAD program. Once I had the plate drawing finished, I export it to a STL file and 3D printed it in PLA. Did a trial fit then made adjustments to the drawing and reprinted it. The bolt will not export the threads for 3D printing, a machinist note will need to be added to tell them what type of threads that is on the filter (I'm using the sbc/bbc filters) side of the bolt. The other end was listed in their list of threads. Then I submitted it online to be made, I paid almost $850.00 to have the plate and bolt made.

A side note: I noticed that the canister oil filter base are not exactly the same from one engine to the other (I have three canister bases and they are all different), probably due to loose specifications. You will need to measure both sealing surfaces on your base very carefully.

For gaskets use the one that come with the canister filter. You will need to remove the one on the oil filter very carefully.

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