Skip to main content

Dart / 11971143P

Part #: 11971143P
UPC: 807051005738

Loading availability... Loading...
Notify me when this item is in stock.

Description: Dart Pro1 CNC Aluminum Big Block Chevy Cylinder Heads

Description:

Description

Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines. Dart PRO1 23 Deg 227cc CNC heads are professional quality competition cylinder heads. We applied the airflow technology developed in our championship winning Pro Stock engine program to produce these state of the art heads. Every intake port, every exhaust runner, every valve bowl and every combustion chamber is 100% CNC machined on special dedicated PRO1 castings. These heads are ideal for high compression, big cubic inch small blocks and are great for supercharged applications. Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components. Hardened exhaust seats are compatible with unleaded gasoline. Manganese Bronze valve guides extend cylinder head life.

Features & benefits

  • Heads are sold individually

Information

Dart Pro1 CNC Aluminum Big Block Chevy Cylinder Heads

Specifications

GTIN
00807051005738
Weight
28 lb
Height
9 in
Length
22.25 in
Width
7 in
EO
Legal US
Life cycle
Available to Order
AAM brand code
DAR
Warehouse brand code
BGWK
AAIA brand code
BGWK

Attributes

CNC Ported
Yes
California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category
Cylinder Heads
Category Hierarchy
Heads>Big Block Chevy>Pro1
Combustion Chamber Volume
66.00
Cylinder Head Material
RMR Cast Aluminum Alloy
Cylinder Head Series
Pro1
EBAY Category ID
33617
Engine
Big Block
Engine - Web
Big Block
Engine Type
ICE
Exhaust Valve Diameter
1.600
Industry
Automotive
Intake Runner Volume
227.00
Intake Valve Diameter
2.080
Make
Chevrolet
Make - Web
Chevrolet
Material
RMR Cast Aluminum Alloy
Port Volume
227.00
Product Type
Engine Cylinder Head
Series
Pro1 Aluminum Chevrolet Big Block Heads
Subcategory
Cylinder Heads
Title
Pro1 Chevrolet Big Block Head - 227.00 CC Port, 66.00 CC Chamber
Title - Web
Pro1 Chevrolet Big Block Head - 227.00 CC Port, 66.00 CC Chamber
Valve Angle
23
Valve Spring Diameter
1.550
Valve Spring Maximum Lift
0.700
Valve Spring Type
Double

Fitment status

This product is universal and will fit your application.

Retail View