This came up a year or more ago.  On a Isky E-4 260 degree .425 lift (with 1.54 rockers), they recommend dual damper 135 lb seat 285 open pressures.  Some of you guys said that was too much.  I agree, but what would be some minimum pressures on a motor with this cam and 1.43 rockers?  Peak rpm 4700.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.