I'm guessing you are talking about historical motors, non-turbo-charged. The author's comparison to 327s was merely for size, not power. A non-boosted Mustang 5.0 makes up to 480 horsepower, for example. That's the equivalent of about 2,600hp for that tank engine. Of course, this isn't really about power-to-displacement, but just the mere insanity of stuffing a tank engine into a sedan. 😄
I read an article in Mechanics Illustrated in the early to mid sixties about some Brit who installed a Merlin in his Rolls-Royce. One of the details that I recall is that he installed the governor from a Centurion tank to keep the revs down. He said it got the same mileage as the original Rolls engine (17 mpg). LLLOOONNNGGG hood!
This is a wild project, no doubt. I have to wonder about the weight distribution though, it can't be conducive to getting all this power on the tarmac efficiently. Oh well, it will have great spectator appeal!
Let’s see…firewall is gone, half the floor pan is out, no place to sit, no way to steer. Plus all that engine protruding well beyond the front of what’s left of the car. The word ‘colossal’ comes to mind—as in Colossal Waste of Time.
I'm assuming they've put more forethought into this than we're seeing here. It looks like they just cut away everything that was in the way to get the motor between the wheels. Not counting them out though, and the visual and auditory impact is already sky high!
This appears to be similar to what Art Arfons was doing in Akron, Ohio shortly after World War II. He took surplus aircraft engines and designed drag racing vehicles around them. The Akron, Ohio airport allowed him to use a taxi-way to do his test runs until they realized that he was tearing up the blacktop excessively and they banned him from using the taxi-way.