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LS3 Rectangle Port Intake to LS1 Cathedral Port Head Adapters - Billet Aluminum


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

They will allow you to install an LS3 intake manifold or supercharger onto LS cathedral port cylinder heads. (Example, LSA supercharger on a 5.3L or Gen 3 LS1/LS2).

(NOTE: These do not work with LS7 intakes). 

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.

The best part? They're made right here in the US!