I agree with what they said, but I think they're utterly on crack when it comes to their rationale. The Vortec, iron head had more power and torque until 3100 rpm. That is the place most street engines live - thus, if you had those aluminum heads on your Corvette (and I had similar ones), you'd lose power and economy in your day-to-day life for marginal gain on a track. Funny thing about racing road courses around here... you're at full song for maybe 10 seconds of the 1m 30s lap. The issue is they compare a Vortec head that rules the street world and took it to the race world. My problem with their result is if you compared the result of that Vortec head with an AFR or Trick or pretty much any non-Chinese head the Vortec head would suck down low AND on top. Honestly, on the track the aluminum head would be useless - they don't even weight that much less then the iron head.
The comparison was bogus because, again, they're not comparing items designed for similar purpose....
You asked on Engine Masters, your next step? compare the aluminum Vortec to an AFR head.
My wife is a mechanical engineer, and (long story shortened*) had the flow of a stock vortec head modeled for a project she was doing. She found that the Vortec head design does an awesome job of mixing air at volumes less than 4500 rpm, but above 4500 its own design became a choke point.... so I say if you're going to spend the money buying aluminum Vortec heads, there are better choices.... what say you? I'm pretty certain that BluePrint won't like the result - but can you do the test anyway?
*lengthened
my wife was working on creating an inhaler for asthma patients that did not use compressed anything to power it. It could only be powered by the person inhaling (who was having trouble breathing, obviously). She found that the Vortec design did a far better job of lifting and breaking up the drug then anything else made prior (like 10x better) and there is a patent in her name because of it....
The comparison was bogus because, again, they're not comparing items designed for similar purpose....
You asked on Engine Masters, your next step? compare the aluminum Vortec to an AFR head.
My wife is a mechanical engineer, and (long story shortened*) had the flow of a stock vortec head modeled for a project she was doing. She found that the Vortec head design does an awesome job of mixing air at volumes less than 4500 rpm, but above 4500 its own design became a choke point.... so I say if you're going to spend the money buying aluminum Vortec heads, there are better choices.... what say you? I'm pretty certain that BluePrint won't like the result - but can you do the test anyway?
*lengthened
my wife was working on creating an inhaler for asthma patients that did not use compressed anything to power it. It could only be powered by the person inhaling (who was having trouble breathing, obviously). She found that the Vortec design did a far better job of lifting and breaking up the drug then anything else made prior (like 10x better) and there is a patent in her name because of it....
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