BEVINSEE Cathedral Port Cylinder Head to Rectangle Port Intake For 4.8L 5.3L LSX Engines
9111064601
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These adapters are designed specifically for connecting the LS1 Cathedral Port Cylinder Head to LSA ZL1 CTS-V Supercharger.
Features:
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【 6061-T6 billet aluminum】BEVINSEE intake adapters adopt 6061-T6 billet aluminum for great solidity.
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【CNC machined】CNC machined with the proper port alignment.
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【Rustproof surface】Hard anodized surface for elegant black finish, highly resistant to corrosion.
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【Meet your need】These adapter plates will allow you to install an LS3 intake manifold or supercharger onto any LS cathedral port cylinder heads.
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【High-quality accessories】Includes grade 8 zinc coated allen bolts for installing a factory supercharger and black viton high quality o-rings.
- 【Clear alignment pin】These plates will clear the CTSV LSA and ZL1 alignment pin, no need to remove.
Specifications:
- Brand: BEVINSEE
- Type: Rectangular Port Intake Manifold Adapter
- Material: 6061 billet aluminum
- Surface: Anodized
Package Included:
2 X Adapter Plates (1/2"" Thick) and 8 O-Ring Seals
Application:
Fit For LS1, LSA, ZL1, CTS-V, LSX Series
Compatible with All Cathedral Port Heads and Adaptable to Any Rectangle Port Intakes, Supercharger, or Blower
NOTE:
Not Suitable for Raised Port LS7 Intakes
LS3 engines need to be modified/polished before use
Intake manifold bolt lengths required when used with Car intake manifold (M6 x 130mm), M6 x 90mm Truck Intake Manifold



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- 5 stars: 13 (93%)
- 4 stars: 1 (7%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Great fit and anodized to protect from corrosion.
Great fit and includes gaskets.
Installed and fit well exactly what this project needed
This product adapted my square port intake to my cathedral port heads
Really nice quality
I used these for my stroker build so I could use my current supercharger on ls1 square port heads..
Awsome products, super fast delivery A+ thank you
I made mine with a slot ground in the top so a straight screwdriver could easily spin them out to install the corner bolts . OR just offer a stud kit for a minimal upcharge .
Appears to be well produced, matching all ports. This particular adapter (which is NOT the more ubiquitous LS3 intake onto LS2 heads), makes for a respectable transition from cathedral port manifold to rectangular port heads (about a 10mm bump over a distance of about 12mm). Not nearly as severe as going the other way around.
This did work as needed to adapt a ls3 intake to a cathedral port head. But I have to order longer bolts from ebay.
Perfect fit and fast shipping!
Loved this product did exactly what i needed it to do.
Todo se ve bien y de buena calidad pero todabia no las instalo.
Initially it looks like things wont line up, but after you torque everything down it lines up perfectly, I verified the port alignment with a scope. Great value.
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