Cylinder Heads Ford 351c Cleveland CNC -Bare Set

Description

Brand:  Blacklabel by Speedmaster

Part Number:  AR9-2811724  

Cylinder Head Style:  Bare

Cylinder Head Material:  Aluminum

Cylinder Head Finish:  Natural

Combustion Chamber Volume (cc):  71 cc

CNC-Machined Combustion Chamber:  Yes

Intake Runner Volume (cc):  235 cc

Exhaust Runner Volume (cc):  n/a

CNC-Machined Intake Runner:  Yes

CNC-Machined Exhaust Runner:  Yes

Intake Port Shape:  Rectangular

Intake Port Location:  Standard 3V (4v with tongues)

Exhaust Port Shape:  Rectangular

Exhaust Port Location: Raised

Spark Plug Style:  Standard

Comp. Valve Job:  Yes

Intake Valves Included:  No

Intake Valve Diameter (in):  2.190 in.

Exhaust Valves Included:  No 

Valve Cover Mounting Style:  Perimeter Bolt

Accessory Bolt Holes Drilled:  Yes 

Intake Valve Angle:  Standard

Exhaust Valve Angle:  Standard

Valve Guides Included:  Yes 

Valve Guide Material:  Bronze 

Valve Seats Machined:  Yes

Valve Seat Machine Style:  3-angle

Valve Seat Material:  Ductile iron 

Steam Holes Drilled:  No

Oiling Style:  Through pushrod 

Machined for O-Ring:  No 

Heat Crossover:  No

Notes:   Exhaust port raised

INTAKE / EXHAUST GASKETS
Due to the unique raised port of the Speedmaster 3v head, the only intake gaskets readily available are Speedmaster SM3282 which measure 1.73(W) x 2.140(T) with the floor of the port 1.220″ up from the deck of the head.
The exhaust side of the head uses standard 4v exhaust gaskets. You can use Speedmaster SM3274 or Fel-Pro 1416 header gaskets which measure 1.89″ (W) x 2.19″ (T).

HEAD GASKETS
The Speedmaster PCE281.1703, PCE281.1714, PCE281.1724 and PCE281.1726 cylinder heads use the following head gaskets for use with 351C block:

Speedmaster PCE348.1005 (MLS 4.055″ gasket bore)
Fel-Pro 1013 (Composite 4.100″ gasket bore)
Both gaskets are .040″ thickness when compressed.

HEAD BOLTS / STUDS
The Speedmaster Cleveland 3v heads require specific head studs that are longer than standard.
Use Speedmaster PCE279.1014.
These studs should only be finger tightened into the block. Torque the nuts to 65lbs. using high pressure moly lube, in increments of 15lbs.

SPARKPLUGS
Our Ford Cleveland cylinder heads require the use of a 14mm. thread 5/8″ hex, .750″ reach spark plugs. Below you will find a list of some plugs that fit and work with our heads:

NGK – BCPR6ES, R5671A-7, R5671A-8
Autolite – 3923, 3924, AR3933, AR3934
Champion – RC12YC, RC10YC4, RC9YC3

Remember that you need a COLDER plug when you make more power, ie. N2O, Turbo and supercharging.

FLOWS:
Flows: Test Data @28″ of water, (according to manufacturer tests).

LIFT
100 200 300 400 500 600 700 800
Intake
68.4 140.8 200.3 253.9 296.2 320.6 339.2 350.3
Exhaust
58.4 106.1 147.4 185.4 216.1 240.5 256.9 265.1