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Description
Edelbrock Cylinder Head E-Cnc GM Gen IIi/IV LS3 Small Port Lsx BlockCylinder Head Specifications: Combustion chamber volume: 69cc; Intake runner volume: 230cc; Exhaust runner volume: 80cc; Intake valve diameter: 2. 135"; Exhaust valve diameter: 1. 55"; Valve stem diameter: 8mm; Valve guides: Manganese bronze; Deck thickness: 5 8"; Valve spring diameter: 1. 30"; Valve spring maximum lift: . 680"; Rocker stud: N A; Guideplate: N A; Pushrod diameter: 5 16"; Valve angle: 13. 25; Exhaust port location: 0. 125" Raised Port;
Cylinder Head Specifications: Combustion chamber volume: 69cc; Intake runner volume: 230cc; Exhaust runner volume: 80cc; Intake valve diameter: 2.135"; Exhaust valve diameter: 1.55"; Valve stem diameter: 8mm; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.30"; Valve spring maximum lift: .680"; Rocker stud: N/A; Guideplate: N/A; Pushrod diameter: 5/16"; Valve angle: 13.25°; Exhaust port location: 0.125" Raised Port; Spark plug fitment: 14mm x 3/4 reach, gasket seat. * Our E-CNC LS3 Cylinder Heads are a great general-purpose high performance cylinder head for any street- strip LS engine. These cylinder heads have a high velocity port compared to stock LS3 cylinder heads, making them an ideal upgrade for any cathedral port or 3.89" bore LS application. They feature an improved design and casting that gives cylinder head porters more material to work with compared to stock heads. Like all of our other E-CNC cylinder heads, these feature fully CNC'd intake ports, combustion chambers and exhaust ports for improved performance. Compatible with stock style rocker arms. * Match with Edelbrock head gasket sets. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. IMPORTANT NOTES; E-CNC LS3 cylinder heads are a great general purpose high performance cylinder head for any street- strip LS engine. These cylinder heads have a high velocity port compared to stock LS3 cylinder heads, making them an ideal upgrade for any cathedral port or 3.89" bore LS application. They feature an improved design and casting that gives cylinder head porters more material to work with compared to stock heads. Compatible with stock style rocker arms. Features an exhaust port that has been raised 0.125" as well as raised spring pockets that have been machined 0.200" for use with longer valves.Installation Instructions
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Installation Instructions
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Solid, simple and perfect.
Color: Black, Color: Black
Great simple design. The quality is evident in the thickness of materials. The assembly instructions, hardware and tools provided help minimize the time spent from opening the box to install. This product is packaged well and shipped with the customer convenience in mind. Well done!
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Awesome quality
Color: White, Color: White
Take your time installing! It comes with all the instructions and templates. Make sure you’re screwing this into solid wood. I would not recommend you hang your expensive PC from a particle board table.
My Pc fits in well and it’s compatible with a ton of different sizes. Mine has been mounted under my desk for about 6 months and is rock solid. I will say, mine is balancing in there. If I don’t have it at its center of gravity, it could tip out. You can adjust it with the various screw holes but make sure you mount it into something solid.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Fantasic under-desk mounting solution for gaming PC
Color: White
This item comes with an incredible amount of tools and guides for making you successful in mounting your desktop PC under the desk. I am very impressed with the quality of the materials and also the quality of documents included. It feel very sturdy using the included hardware.
I would recommend this item for anyone wanting to free up desktop space!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
PC holder that looks great and works on large PCs for easy under desk mounting
Color: Black
After a lot of research and trial and error I finally found the Heavy Duty Under Desk PC Holder. It is the only under desk PC holder that looks good and is able to hold my HP Omen 45L where I want it - under my desk. Putting it together is relatively easy as was the installation to the desk. No messing with cables or round steel tubes to get the job done.
The metal is solid, the black powder coating looks great, and the installation hardware is a;l there including a drill bit, hex key, and wrench. You just need to bring a screw driver for the wood screws to attach it to your desk.
Read the instructions and make sure you take the depth of your PC into account when attaching the PC holder to your desk, especially if you have a standing desk with motors.
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Reviewed in the United States on October 16, 2025
★★★★★ 4
Quality Holder
Color: White
Very quality holder and very sturdy and stable. I purchased it back in April, and it has been holding up nicely. I would definitely say that it is worth the price. I love that it's adjustable, so if I ever decide I want to new PC case, I can still use it (as long as it fits the dimensions of the holder). Putting it together and mounting it was simple. The only reason I'm giving 4 stars is that it did not come with screws, and I had to purchase some. I hope that has been changed since then.
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Reviewed in the United States on October 12, 2025
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