Our Intake manifold to cathedral head adapter plates are CNC machined from 6061-T6 aircraft billet aluminum.  

These adapter plates will allow you to install an LS3 intake manifold or supercharger onto any LS cathedral port cylinder head configuration.

Machined with the proper port alignment.

Includes grade 8 zinc-coated Allen bolts for installing a factory supercharger, stainless washers, and black Viton high-quality o-rings.

These plates will clear the CTSV LSA and ZL1 alignment pin, no need to remove.

As always, all our products are made right here in the US!