318 timing chain.....and why the engine should come out.

FWIW I had good results with the Lunati Voodoo 256/262 adv. duration cam in a stock 318. Not as cheap as a Summit etc. cam but IMO worth the money for a better profile. I do know the faster-ramp cams make more area under the power curve (broad torque band). The valves overall aren't open much longer but they spend more time at higher lift off the seat so you get more air/fuel into the cylinders for a given duration.