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**The Rocknrod** · 05-19-2020, 08:19 AM

Taken from another site:
"There are two different styles of spin-on adapters. The first style pictured below (Mr Gasket 1270) has 13/16-16 threads and uses a Chevrolet type spin on filter like the Wix 51069. This filter uses the original bypass valve from the old canister filter. A felt washer seals the adapter to the bypass valve. When this adapter is installed it sticks out of the block about ¾ of an inch. I don’t recommend using this adapter. If the felt washer slips out of place oil will bypass the filter. Worse yet pieces of the felt washer can come loose and plug the oil galleries.

The next adapter has ¾-16 threads and uses a common Ford or Chrysler type filter (Wix 51515). This adapter bolts directly to the block and doesn’t use the old bypass valve. The Ford spin on type filters have a bypass valve built in. This adapter fits flush with the block. This is the adapter I use and it is available at Summit here:https://www.summitracing.com/parts/t...FdgYgQodx_AHRA "

Summit shows more - https://www.summitracing.com/search/...ters/year/1957

05-19-2020, 08:19 AM	#3
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Another spin on oil filter question Taken from another site: "There are two different styles of spin-on adapters. The first style pictured below (Mr Gasket 1270) has 13/16-16 threads and uses a Chevrolet type spin on filter like the Wix 51069. This filter uses the original bypass valve from the old canister filter. A felt washer seals the adapter to the bypass valve. When this adapter is installed it sticks out of the block about ¾ of an inch. I don’t recommend using this adapter. If the felt washer slips out of place oil will bypass the filter. Worse yet pieces of the felt washer can come loose and plug the oil galleries. The next adapter has ¾-16 threads and uses a common Ford or Chrysler type filter (Wix 51515). This adapter bolts directly to the block and doesn’t use the old bypass valve. The Ford spin on type filters have a bypass valve built in. This adapter fits flush with the block. This is the adapter I use and it is available at Summit here:https://www.summitracing.com/parts/t...FdgYgQodx_AHRA " Summit shows more - https://www.summitracing.com/search/...ters/year/1957 __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?