Chain drive vs Jesel for big cam, 7000 RPM

Gears rob power. Grumpy Jenkens. Use to run a aluminum/nylon top sprocket. He cut as much reciprocating weight as possible. I myself never buy a chain set . You need to get the chain separate to fit your engine. Cam and crank bores are never the same distance apart and for this reason a chain is fitted to every build. Or just run them loose like most do.