Witcher

The LT1/LT4 416ci competition long block uses a new GM LT1/LT4 block with 4.070" bore to produce the 416CI.  This long block provides a strong foundation for Boosted engines making up to 1000hp.

Built off of our premium Magnum Performance Line, our Magnum Truck Kit will give your engine an incredible 45% boost in horsepower: Featuring a massive charge air cooler, sitting directly above the supercharger outlet for maximum cooling capability. The uniquely styled lid has been designed to allow consistent and uniform air flow to all eight cylinders, for reliable, repeatable performance— all day long!

Built off of our premium Magnum Performance Line, our Magnum Truck Kit will give your engine an incredible 45% boost in horsepower: Featuring a massive charge air cooler, sitting directly above the supercharger outlet for maximum cooling capability. The uniquely styled lid has been designed to allow consistent and uniform air flow to all eight cylinders, for reliable, repeatable performance— all day long!