These intakes are the perfect compliment to a "Torquer" Merlin setup, this single plane 360° intake is designed to use a 4150 or a 4500 series carburetor. The Merlin manifolds are made using World's RightCast process to ensure a smooth internal flow, so you won't have to clean up the plenum and runners. Equipped with bosses for nitrous or fuel injection nozzles. The runner volumes are optimized to provide superior throttle response and great down the track performance. They are available for both standard or tall deck blocks. The runner sizes are effective enough to feed 468-540ci engines.