Dart Pro1 227cc Aluminum Cnc Heads For Small Block Chevy Bare Pn 11970040 on 2040-parts.com
US $2,219.00
Location:
Miami, Florida, United States
Condition:NewManufacturer Part Number:11970040Warranty:NoPart Brand:DartCountry of Manufacture:United States
Dart Pro1 227cc Aluminum CNC Heads for Small Block Chevy Bare Castings Intake port 227cc / Chamber Volume 66cc / Angle Plugs / 2.08 & 1.600 valve jobs
These heads are being sold bare, without valvetrain. Please disregard the photo. If you are looking for the same heads assembled, I have them in another ad. The price you see in the buy it now reflects a pair of heads NOT ONE.
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 inch small blocks and a great for supercharged applications.
Features:
Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
Bolt on compatibility: Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components.
Fully CNC machined 227cc intake ports produce awesome airflow and fuel suspension characteristics.
64cc combustion chambers are CNC machined for maximum consistency.
Hardened exhaust seats are compatible with unleaded gasoline.
Manganese bronze valve guides extend cylinder head life.
Angle plug style for racing headers.
Spark plug holes are machined for gasketed 3/4" reach plugs.
All cylinder heads sold in pairs
Specs:
Part #
11970040P
Material
255-T61 Aluminum Alloy
Combustion Chambers
66cc for 4.155" bore
Intake Valve Diameter
2.08"
Intake Port Volume
227cc
Intake Port Diameter
2.200" X 1.310"
Intake Port Location
Stock
Intake Gasket
Fel-Pro 1206
Exhaust Valve Diameter
1.600"
Exhaust Port Volume
85cc
Exhaust Port Diameter
1.410" X 1.585" W
Exhaust Port Location
Stock location & bolt pattern
Exhaust Gasket
Fel-Pro 1405
Flow, Intake
309cfm @ .700" lift / 28"
Flow, Exhaust
226cfm @ .700" lift / 28"
Head Bolts
Stock bolts can be used. We recommend ARP 134-3601
Head Studs
ARP 134-4001 or 234-4301 (12pt)
Manifold
Aluminum Single Plane Dart (opening - 1.100" X 2.000") 5.500" tall
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