Pontiac Performer RPM Intake to 4150 style carb spacer kit

Description

This is our Performer RPM flange shape to a 4150 style carb base 1″ spacer.  We designed this spacer using the 3d modeling feature in MasterCam 2021 and we make them on our own Milltronics CNC machines!  This 1″ spacer has a standard 4150 style bolt pattern and morphs to the Edelbrock 7156 Performer RPM carb flange.  The unique transitionary blend between the 4150 open  port at the base of the carburetor and the RPM specific shape plenum of the intake manifold has provided tangible gains in both low rpm power and total average power.  The kit includes a 1″ spacer, 1 – 4150 style carb gasket, 1- RPM style gasket, and a set of ARP carb studs to bolt the spacer down.