Junkyard Magnum. Lifter tick?

I put Harland Sharp 1.7 roller rockers on my 360 magnum in my truck. Just popped the valve covers off and installed slicker than a whistle. Worked with all existing valve train.
So no problems going to 1.7 rockers?
What did that give you for lift?? Any notacible improvement in power????
Stock magnum heads?

Scott