The Edelbrock E-Force Supercharger #15143 dual quad carb for small-block ( non intercoolded) Chevy are a traditional positive displacement supercharger that is ideal for use in street rod and muscle car applications Black Unit. They 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. E-Force supercharger systems are available with or without dual-carburetors and dual EFI throttle bodies. These systems are designed to be installed on a factory style front end drive. Will not work directly with aftermarket serpentine systems. Systems are available in natural satin aluminum, black powder coated or polished finish for a show quality classic look. Compatible with 6-7/16" center-to-center air cleaners Intended for 302-400 c.i.d. Small-Block Chevrolets equipped with a long water pump and stock style bracketry. It’s designed to utilize the factory accessory drive belts, in conjunction with the secondary 10 rib supercharger pulley drive system. Carb pad height: 11.73" (measured from the end seal surface), throttle body height: 2.66".