WIX 51335 Oil Filter

That filter is extra short compared to the shorter of the two OEM style. Use a thin oil or you will starve the motor at upper RPM's. Less filter hinders Flow through characteristics. Just a thought. I didn't have room so I went to a remote filter. You just haveto crank the motor with coil turned off until you see the mechanical gauge move.

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I ran a remote on a hot 406 sbc I built , worked well-------------