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 heads.

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!

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.

STEEL (steel bolts): Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.