1.6 rockers with stock 318 cam??

I have a '75 318 with an Edelbrock torker, a 570 vac secondary Holley and dual exhaust. I want more low end torque, (don't care about power over 4000 rpm) I'm thinking of upgrading to a Weiand dual plane or LD4B eddy. I don't really want to swap the cam, will putting 1.6 roller rockers make a noticeable improvement in torque while retaining the stock cam?

And please don't suggest swapping in a 360 LOL