Cam advice for more torque from 340

you are getting great advice BUT with those pistons and heads and that cam if it is even close to those specs 165 psi cranking compression is all you will get max. that setup will scream but it needs 391 ish gears, power sweet spot will be 4000 to 6600 and yes there are much better cams for bottom end power.advance the cam 4 deg it will help