LS Rectangle Port Cylinder Head to Cathedral Intake Adapters

LS Rectangle Port Cylinder Head to Cathedral Intake Adapters

SKU: 551317

Regular price $215.99 Save $-215.99
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Rectangle Port Cylinder Head to Cathedral Port Intake

Can ONLY be used with LS rectangle port cylinder heads 
Will not fit raised port LS7 cylinder heads

  • Fits ANY rectangle port head and bolts to ANY cathedral port intake manifold, supercharger or blower
  • Package Includes: 2 adapter plates (1/2" thick) with 8 O-ring seals
  • Made in Wichita, KS from 6061-T6, USA billet aluminum


Intake manifold bolt lengths required when used with
  1. Factory GM LSA supercharger (M6 x 70mm) use ICT part # 551400 
  2. Car intake manifold (M6 x 130mm)  use ICT part # BOLTM6-130X10
  3. Truck intake manifold (M6 x 90mm)  use ICT part # BOLTM6-90X10
See our other listing for reverse adapters