How far to rev this 273 commando build

All I know is that my 318 with RHS heads done by IMM, Edelbrock RPM cam and manifold ran very good with my 3.09 first gear 4 speed, 3.55 gears, rear tire was 24.5" diameter (245/45/17)

Ran so damn good and revved very easy, and quick. I blew it up at 7200 rpm, I wasn't watching what I was doing. ...Cracked a wrist pin. But it sure sounded good.

I want another high winding 318 built with forged internals and solid roller. Too much fun.