This wild Mustang prototype is a test bed for Ford's 7.3-liter crate engine.
The engineers explain that because this drivetrain runs on its own standalone ECU, it could be dropped into anything, from a Fifties pickup to a brand-new Mustang. The development crew picked this Shelby GT350 to use as a tester simply because they had it sitting around.
The reason for that massive bulge? Well, the prototype engine has an intake that points to the sky, so engineers needed to fit a manifold that wouldn't clear the hood shut lines. The production manifold will come with a straight-line entrance, making clearance issues a thing of the past.
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