Here we compare the factory intake manifold with stock throttle body versus the final C&L intake manifold with the single-blade throttle body, which had the benefit of a cool-down period with ice on the intake manifold for 30 minutes. Peak numbers went from 409.08 all the way up to 442.58 hp. The biggest gain, however, was achieved at 6,875 rpm, where power went from 399.13 to 440.73, a gain of 41.6 hp. The best "full hot" pull (without the aid of a cool down) delivered a still-impressive 435.9 peak horsepower reading. On this heavily modified Three-Valve engine, the C&L intake manifold proved to be a potent performer, without giving up much at the bottom end. With the car built for drag racing, it's optimized to benefit from the improvements made here as well.