LS Cathedral Port To Rectangle Port Intake Manifold Adapters | SPEEDY SAU-51-EM-1021-S
LS Cathedral Port To Rectangle Port Intake Manifold Adapters | SPEEDY SAU-51-EM-1021-S
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LS Cathedral Port To Rectangle Port Intake Manifold Adapters | SPEEDY SAU-51-EM-1021-S

5 stars out of 2 reviews
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10 ratings

About this item

Got a set of cathedral port heads but want to run a rectangle port intake like an LS3 or LSA manifold?

LS Cathedral Port Cylinder Head to Rectangle Port Intake Manifold Adapters

These adapters from SPEEDY make it happen.

Cylinder Head To Rectangle Port Intake Manifold Adapter For LSA LSX Cathedral Port

Part number SAU-51-EM-1021-S, they're machined from aluminum and come with mounting hardware.

LS Engine Swap LS Intake Manifold Adapter Plates - Cathedral To Rectangle Port Aluminum 831602

Silver finish, heat-resistant, and direct bolt-on.

Hot Fits LS Cathedral Port Cylinder Head Rectangle Port Intake Manifold

Just so you know, these won't work with raised port LS7 intakes—these are specifically for cathedral heads to standard rectangle ports.

ICT Billet Gen V LT Cylinder Head to LS Gen III Car / Truck

Brand new, 3-month warranty.

Convert from Cathedral to Rectangular Port

If you're mixing and matching LS parts, these little adapters save you from buying new heads.

So I ordered a square port intake. My heads are cathedral

Keep your build moving with the right parts.

Rectangle Billet Intake Manifold Adapter Plates Compatible

$ 35.00
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