Recently Keith Dorton of Automotive Specialists built two very similar engines. They were, in fact, practically identical except for the induction. Both were 400 cubic inch small block Chevy’s with identical Molnar stroker crank and rods, Crane Cams valvetrain, and AFR cylinder heads.
The difference between the two was the induction systems. One was outfitted with an Edelbrock single-plane Victor Jr. intake manifold and a Holley carburetor, while the second got its air and fuel from a very unique Borla Induction EFI setup controlled by a FAST ECU.
This ins’t exactly an apples-to-apples comparison, since we are using entire different systems. In fact, the big-inch Chevy could almost certainly use bigger throttle bodies on the EFI setup to make maximum power. But the dyno testing is pretty interesting, and we always love any opportunity to make a little horsepower.