Engine Cylinder Head

The Victor DR23 Cylinder Head #614468 for Chevy Big-Block engines is Edelbrock's third generation of the Victor Chevy BB head. This bare cylinder head is fully CNC ported with a race-oriented design for those who demand a high-performance head with durability that they can rely on. The DR23 retains the use of conventional intake manifolds, the most recent of which are the Super Victor II #2896 for 9.8-inch deck Chevy BB engines with a standard thick flange, and the Super Victor II #2897 for 10.2-inch tall-deck engines. The evolved head architecture of the DR23 takes advantage of the improved capability of the new manifolds. A rolled deck from the second-gen design produces a 23-degree valve angle. Other improvements include revised intake and exhaust valve locations, improved spark plug placement, and a new water jacket that is more head porter friendly than the previous head. The DR23 is a CNC-ported finished cylinder head. For those who wish to do their own port work, Edelbrock offers the BV3 Head #614669. Both the DR23 and BV3 are manufactured with special small-run production methods for the highest quality results. This includes Hot Isostatic Press processing in which raw aluminum castings are heated to 900 degrees Fahrenheit in a pressurized chamber with up to 30,000 PSI. This eliminates imperfections by removing any trapped gases or internal porosity. The result is an incredibly strong, dense sand casting that has three times the fatigue life and nearly the consistency of billet aluminum. HIP-processed head has less chance of failure due to fatigue and also provide a smoother machined surface when port and chamber work is applied. The DR23 uses a stock Chevy head bolt pattern but requires a shaft rocker system and is designed to be used with Edelbrock 7-bolt valve covers sold separately under part number #4259. Valve sizing is 2.40-inch on the intake and 1.88-inch on the exhaust with 119cc chamber volume. Port volumes are 377cc intake and 128cc exhaust.

Additional Attributes:

GTIN: 00085347997923
CNC Ported: Yes
Combustion Chamber Volume: 119
Construction Type: Bare
Deck Thickness: 0.750
EGR Port: No
Exhaust Port Location: +0.700
Exhaust Runner Volume: 128
Family: Victor
Flange Type: Conventional Intake
Grade Type: Performance
Guide Material: Manganese Bronze
Guide Plates Included: No
Head Casting Number: N/A
Horsepower: 800-1000
Intake Runner Volume: 377
Material: Aluminum
Quantity: Sold Individually
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.
Seat Angle: Exhaust 45 deg/Intake 45
Seat Material: Ductile Iron
Series: Victor
Valve Angle: 23
Valve Included: No
Valve Spring Diameter: 1.635
Valve Springs Included: No

Extended Information:

Emissions : EPA Eligible
Life Cycle Status: Obsolete

Packaging:

Quantity of Each: 1
Package UOM: EA
Dimension: 26.5 x 9 x 12.13 inches
Weight: 70 PG