1.7 ratio roller rocker on a SBC
I would like to use a 1.7 roller rocker on my sbc. But I have heard that this can increase valve guide wear.Why is this true if it is a roller tip.
Tech. info: heads eldelbrock performer rpm.
cam. comp cams mech. flat tappet. 250 deg. at .050 intake. 262 deg. at .050 exh. with .571 gross lift intake, .595 gross lift exhaust.
I have had the heads ported & 2.055" intakes installed. They keep increasing in flow untill the retainer & rocker arm would interfer at .790".
I have mocked up the piston to valve clearance with 1.6 roller rockers & have .195" p.t.v. clearance.
The spring pressures are 125# and good to .670" lift.