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Edelbrock 61205 E-CNC 225 Small Block Chevy Cylinder Head 70cc

(GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86 + 156 more models)

Manufacturer

Picture for manufacturer Edelbrock

Part Number

61205
9 reviews
Sale Price

$1,809.01

Estimated ship date Tuesday, November 24

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Product Details

The Edelbrock E-CNC 225 cylinder head for Small Block Chevy engines delivers exceptional performance through precision CNC machining. Designed for serious street and racing applications, this 70cc combustion chamber head features fully CNC-ported intake ports, exhaust ports, and combustion chambers to maximize airflow and power output.

Key Features:

  • Fully CNC machined intake ports, exhaust ports, and combustion chambers for optimal flow and performance
  • 70cc combustion chamber volume for improved compression ratios
  • Delivers 30-60 horsepower gains over standard Performer RPM cylinder heads
  • Maintains stock 23-degree valve angle for broad compatibility
  • Uses original intake flange bolt pattern for use with 1986 and earlier intake manifolds
  • Heavy-duty 7/16-inch head studs for secure clamping
  • Angled spark plug design for improved accessibility
  • High-quality lightweight valve springs engineered for maximum lift capability
  • Heavy-duty hardware throughout for racing durability

The E-CNC 225 cylinder head is engineered for enthusiasts demanding maximum horsepower and torque from their Small Block Chevy engine. The precision CNC porting ensures consistent performance and superior airflow compared to cast or hand-ported alternatives, making this an excellent choice for both high-performance street builds and competitive racing applications.

Products specifications

Fits

GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86, C15/C1500 Pickup 1967-74, C2500 1979-86, K1500 Suburban 1979-86, G25/G2500 Van 1967-74 + 152 more models

Quantity

Sold individually

Valve Angle

23

Type

Complete

Preparation

Factory CNC Ported

Grade Type

Performance

Valve Included

Yes

Camshaft Type

Hydraulic Roller

Cylinder Head Type

Standard

Engine Make/Size

Chevy Small Block (262-400)

Finish

Satin

Usage

Racing

Material

Aluminum

Construction Type

Complete

Guide Plates Included

Yes

Horsepower

500-600

Seat Angle

Exhaust 45 deg/Intake 45

Deck Thickness

0.5625

Rotor Center Bore Inside Diameter

Angled

Seat Material

Ductile Iron

Combustion Chamber Volume

64

EGR Port

No

Family

E-CNC

Push Rod Diameter

(Suggested) 0.3125

Rocker Stud Diameter

0.4375

Guide Plate Material

Hardened Steel

Series

E-CNC

Retainer Included

No

RGL

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.

Exhaust Runner Volume

88

Exhaust Port Location

+.200

Intake Runner Volume

225

Valve Spring Maximum Lift

0.680

Valve Spring Diameter

1.34

Exhaust Valve Diameter

1.60

Guide Material

Manganese Bronze

Valve Stem Diameter

0.3110

Intake Valve Diameter

2.10

Rocker Arm Stud Diameter

0.4375

CNC Ported

Yes

Valve Springs Included

Yes

I would like to have more shipping information

Would be nice to have the calculator for shipping costs earlier in the process...

easy to navigate

Lots of parts in stock at great prices.

Quick n easy high quality

Ok

The process seemed pretty simple to me. Will definitely use again.

mmmmmk

Not sure yet can reply later

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