Different engine I know, but last time I used a wix and noticed that my acdelco filter has more holes on the top of the filter for more efficient oil flow. I'll probably always use acd in the future1969byrdman said:I'm with Sub on this one. Wix. AC Delco is fine. I avoid Fram.
Interesting. From a purely physical standpoint (internals aside) it seems more holes/ports would equal more flowSubmariner409 said:The tapping plate holes have very little to do with oil flow - the weave and amount of filter media is the main restriction there. The WIX 51522 for the Northstar actually has larger inlet holes than most other like filters. The HD Fram next to it is used on the Olds 455 marine engine adapters. In the first link, compare the number and size of the tapping plate holes in the WIX and 2008 Ecore (AC Delco) pictures. About the same inlet area, no ??? Do some study ................... http://www.minimopar.net/oilfilters/ http://www.minimopar.net/oilfilters/opinions.html