[blykins]

What I've learned over the years is that there are varying degrees of "streetable." Some guys like tow truck torque, right off idle, some guys like 5500-6000 rpm horsepower peaks, and some guys like to spin the engines up to 7500.

With the exception of the one 11.5:1 427 FE on my page, all of those engines are street engines. That 427 was for an FIA road race '63.5 Galaxie.

Days of .450-.500" valve lifts are long gone, especially in the past 20 years, where leaps and bounds have been made in valvetrain technology. Very rarely do I build an engine with under .575" valve lift, and most street hydraulic rollers are .600-.650" lift at the valve. Those engines have very mild cams and will last forever. Now granted, I don't use NAPA valve springs and Autozone lifters, my engines get high quality valve springs from Comp, PAC, PSI, etc., and lifters are Ford Racing, Morel, etc.

On the solid roller engines, there is a degree of maintenance not present with the other engines. However, lifter technology has also jumped by leaps and bounds, and now we have pressure fed and bushed lifters that will go 20-30k miles before inspection. Adjusting valve lash every week is also a wives' tale, and with the quality of parts that are available, it's essentially a "set it and forget it" mindset. Obviously race engines should get checked more often due to the amount of abuse they take.