Originally Posted By: apwillard1986
Since GM has managed to produce pushrod engines that consistently meet or beat the competition in terms of power and economy I am sure they won’t stray from that formula. Each time GM has released a new engine it has proven itself to be very competitive and also adaptable. The current 5.3 is ten years old and only in the last two years has it been eclipsed in terms of economy and power.
My point exactly. I'm tired of technologies being shoved aside when they clearly work. I'm not going to pretend that an overhead cam engine doesn't offer more flexibility in terms of variable valve timing and lift, but if the current system in place (for GM a pushrod engine) works well, which it does, there's little reason to change it.
GM pushrod V8's have proven themselves to be not only competitive in the marketplace, but incredibly durable, tunable, and long-lasting. I see no reason to stray from that formula until they're being outgunned, which they aren't (yet). Keep in mind that Ford (with the exception of the Coyote which is still not too far off the power output of the LS3 engines) has resorted to forced induction to "move ahead". The OHC Ford V8's were behind the pushrod GM engines in power and fuel economy over the past decade.