When I had my old Diplomat with a MP 360 crate engine, I did a oil filter relocation, putting it up front under the bumper, and I was running a huge Wix Filter for extra capacity. I think it added a full quart of oil. It was around 7 or 8 inches tall. Now I have another small block crate engine Diplomat, and have relocated the filter again, but cannot find the part number for that big Wix Filter. IIRC, it was marketed as a Ford truck filter, maybe. Anyway, does anyone know a number for a similar sized one that will fit my Mopar small block? It has the stock thread size on the adapter (3/4"-16 I think). I'm hoping someone here is running one and can give me a number for a big Wix, Baldwin, or Purolator. I would also appreciate it if someone can confirm that when looking for thread size, 3/4"-16 is the stock thread size for a Mopar small block. Thanks
Thank you.

IIRC The Wix Number is 51515

51515 is the PH8 style filter. There are larger ones, or run a dual filter setup.

Wix 1459 will screw on where a 51515 does and dwarfs it.

Ya, the 51515 is only 5.1 inches tall. The one I was running before and looking for now is about 8 inches tall.

I don't want to run a dual filter setup because I have already spent big on large braided lines and the relocation kit, and mounted it.

The other thing that's baffling me is when I type in "1989 Dodge Diplomat" and "LA Small Block" in sites like summit and jegs, I see both 3/4"-16 AND 20x1.5MM as the thread size. Are these the same sizes, just metric conversion? The stock filter would fit, and I was just searching that way to get a thread size. They just list a bunch of shorty filters for my application because without the relocation you can't run a larger one. Thanks.

Yes 3/4-16 same thread/filter gasket dia for furd/Mopar. Baldwin BT237 full flow/has standpipe. Baldwin BT251 has 8 psi bypass valve. Both are long filters. Many brands have long filters that interchange with these numbers

DakChrgr: I think you are right! I searched the number you provided and it looks like the tall one I had before. 3/4" - 16 too. Thanks!

http://www.fleetfilter.com/filter/wix-oil-filters/51459.html

Thank You Robert. That Baldwin is a tall one too at 7.1 inches. So now I have a choice too. Thanks guys! I swear I searched for hours, but just wasn't sure about the 3/4 - 16 and was getting two different sizes when searching as if the vehicle were stock.

I think I might go for the Baldwin. Going to try and find out in what country they are made. Wix website says their filters are produced in 11 different countries.

Thanks again!

Baldwin even has a racing filter (dont know the #) if that would be more toward your needs. I would check into the full flow/8psi bypass/standpipe info. On your earlier Q SAE (3/4-16) and Metric are totally different threads & for (future) reference there are 25.4 millimeters (MM) in an inch

I use the Chevy truck filter on a remote base. It is a 2 quart filter.

Thanks to both of you for the info. Strange how summit lists two different ones for my car when I type it in by year, make and model. That's why I come here for the right info.

Andy; it looks like the racing wix you have might be same size, just different insides on racing filter. Maybe not a paper element? I will look into that one too. Thanks.

Also....I have to admit I had to search "standpipe" just now, hehe. The description sounds as though it's purpose is the same or similar to anti-drainback valve. Is that correct?

Also, now that I have a remote loction the filter is mounted perfectly vertical (like AndyF's) and down low, so it must stay full, right?

While researching the Baldwin, I came up with this interesting info on counterfeit Baldwins in the market
http://www.baldwinfilter.com/productsgenuinebaldwin.html

When I used to work at NAPA when a customer walked in and wanted the, "Big Ford Filter" we used to sell that worked on mopars was 1773, it was a taller version of the 1515 filter, here is a link to compare the two filters,
http://www.cherokeeforum.com/f2/large-oil-filters-35703/index2/

Take a look at the Wix 51773 It screws onto the BB Mopar stock oil pump and fits most cars, your deal with the remote should work fine

What Cab said

All this time I have been looking to recognize a Wix number from what I used to use and thought maybe I did, but wasn't sure, so went by looks. But now the 51773 is ringing a bell bigtime. That's the filter I was using. Man they do make so many! So I am going with that or the Baldwin BT237. I emailed Baldwin and the BT237 is manufactured in South Dakota. I like that. Thanks all.

I will look up that MM article too.

Cnxt: Do you have the link for that article? I have been searching Mopar Muscle online and haven't been able to find it. Apparently, the only online search I can do of MM Magazine requires I look through a bunch of Phord and Chebby junk and I don't want to see any of their sh$t.

Thanks.

Also: Does anyone know if a 2014 5.7 Hemi is also a 3/4-16 oil filter? I think it is but haven't done my first oil change yet on my 2014 and would like to use the same filter as my old stuff. Hopefully it has room for the Wix 51773 or Baldwin BT237.

I think they went to 22mm thread in around 08 or so.