We use cookies to provide you with the best possible user experience. By continuing to use our site, you agree to their use. To learn more, view our Cookie Policy.
Toggle Nav Toggle Search 
E-CNC Gen III/IV LS Chevy Cylinder Head Small Port LSX Block
$1,845.50
Edelbrock part #61329 E-CNC LS3 Cylinder Heads are a great general-purpose high performance cylinder head for any street- strip LS engine.
In stock
SKU
61329
BUY DIRECT AND GET:
Fast shipping
We pride ourselves in ensuring all products are
shipped as quickly as possible.
Shipping
policy
Easy returns
We offer a quick and painless return process on all new and unused products when purchased direct.
Return policy
Tech support
Our Tech Support Agents are second to none. We can answer any of your tech inquiries!
Tech support
High quality
Our core products are made in the USA offering unsurpassed quality and performance.
About Us
Details
The Edelbrock #61329 E-CNC LS3 cylinder head is a great general-purpose high performance cylinder head for any street- strip LS engine. This cylinder head has a high velocity port compared to stock LS3 cylinder head, 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 another stock head. Like all of our other E-CNC cylinder head, these feature fully CNC'd intake ports, combustion chambers and exhaust ports for improved performance. Compatible with stock style rocker arms.
Documents & Installation Notes
REVIEWS
Specs
| Manufacturer | Edelbrock |
|---|---|
| Application | Application Specific |
| UPC | 00085347613298 |
| Series | E-CNC |
| Grade Type | Performance |
| Quantity | Sold Individually |
| Camshaft Type | Hydraulic Roller |
| CARB Executive Order Number | D-215-98 |
| Horsepower | 450-550 HP |
| Availability Note | Available to Order |
| Warranty | 12 Months |
| Seat Angle | Exhaust 39 deg/Intake 45 deg |
| Emissions Code | EO Number: D-215-98 |
| Hazardous Materials Warning |  WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov. |
| Installation Notes | Use 14mm x 17.5mm (.708”) reach tapered seat resistor type spark plugs. Heat range requirements will vary by application. For many applications, GM factory spark plugs or equivalent spark plugs such as Champion RS14YC6, NGK TR55, or Denso IT16 spark plugs may be used. Use anti-seize on the plug threads to prevent galling in the cylinder head, and torque to 10 ft./lbs. Do not over tighten sparkplugs! If a short reach plug is used, poor performance and possible engine damage may occur. |
| CNC Ported | Yes |
| Combustion Chamber Volume | 69 cc |
| Deck Height | 9.240 in |
| Deck Thickness | 0.625 in |
| Intake Valve Diameter | 2.135 in |
| Exhaust Valve Diameter | 1.55 in |
| Guide Plates Included | No |
| Intake Runner Volume | 260 cc |
| Material | Aluminum |
| Push Rod Diameter | 0.312 in |
| Valve Angle | 13.25 deg |
| Valve Spring Diameter | 1.30 in |
| Valve Spring Maximum Lift | 0.680 in |
| Valve Stem Diameter | 0.314961 in |
