The Edelbrock E-Force Enforcer EFI Supercharger system part #1522 has been designed especially for Small-Block Chevy engines with E-Tec or Vortec type cylinder heads. It's a traditional positive displacement supercharger that is ideal for street rods and muscle cars with a Small-Block Chevy engine. The E-Force Enforcer system part #1522 is setup for electronic fuel injected applications and features a dual throttle body flange that will accept Edelbrock throttle bodies with 4150-style bolt pattern. The throttle body flange is also compatible with Edelbrock 6-7/16" center-to-center air cleaners. The Edelbrock part #1522 E-Force Enforcer Supercharger system also includes a high capacity air to water intercooler with a bar and plate design and will require a low temp radiator to cool the incoming intake charge. Enforcer systems include a newly designed intake assembly with Eaton Gen VI 2300 TVS internals, manifold, drive pulleys, 10-rib serpentine belt, and all the necessary hardware. Complete systems are pre-assembled for an easy bolt-on installation. Enforcer part #1522 will have a natural satin aluminum finish. Intended for 302-400 c.i.d. Small-Block Chevrolet engines with E-Tec or Vortec type cylinder heads. Enforcer systems are designed to be installed on a factory style front end drive and pulley system with a long water pump. Designed to utilize the factory accessory drive belts, in conjunction with the secondary 10 rib supercharger pulley drive system. Will not work directly with aftermarket serpentine systems. EFI systems include the supercharger housing with rotors and drive pulley, intake manifold, fuel rails and a high capacity air to water intercooler with a bar and plate design. Carb pad height: 11.73" (measured from the end seal surface), throttle body height: 2.66". Compatible with 6-7/16" center-to-center air cleaners. Does not include throttle bodies, electronics, harness & injectors.