Ma preferred ported so it'd still be at 15 at idle & the can would start adding in more when above idle the vac got to the amt needed to start pulling the diaphram (A Sears hand vac pump works good for working with this). (3) dist slot plates I have seen are stamped 11/13/17, 22/26/34 added crank degrees respectively & plus the can adds quite a bit at part throttle, good for mileage/driveability. Agreed, it takes work to dial it in spot on for max benefit, but worth it. EDIT dial in the initial/total/springs/vac can. IN ORDER.

Last edited by RapidRobert; 01/22/19 02:56 PM.

live every 24 hour block of time like it's your last day on earth