RHS™ Pro Action™ Small Block Ford Cylinder Heads
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OVERVIEW

RHS® Pro Action™ cylinder heads are available for Ford 289-351 Windsor and 5.0 liter applications. Available in cast iron or aluminum, and in a variety of intake runner and combustion chamber volumes, Pro Action™ heads are the perfect cylinder head for street rods, muscle cars, oval track, and drag racing. With a long list of desirable standard features Pro Action™ Small Block Ford cylinder heads are the race winner’s choice.

FEATURES:
 Multi-angled intake valve seats
Radius exhaust valve seats
Improved valve guide design
Highly efficient water jacket
Manganese intake valve guides
Bronze exhaust valve guides
Hardened valve seats
Extra-thick deck faces


  This seal ensures that all assembled RHS™cylinder heads use top-quality COMP Cams® components for maximum durability and performance.  


RHS™ Pro Action™ 180cc cylinder heads are the perfect bolt-on head for smaller-displacement Ford Windsor-based engines. Ideal for 289 to 351 CID and 5.0L street performance engines, Pro Action™  180cc cylinder heads will produce up to 400 flywheel horsepower in naturally aspirated trim.

RPM RANGE
 1500-6500 1500-6500
COMBUSTION CHAMBER VOL.
 58cc 64cc
INTAKE RUNNER VOL.
 180cc 180cc
FINISH
 AS CAST AS CAST
APPROX. HP
325-400 325-400
PEAK AIRFLOW, INTAKE
 276 CFM @ .700" LIFT 276 CFM @ .700" LIFT
PEAK AIRFLOW, EXHAUST
202 CFM @ .700" LIFT 202 CFM @ .700" LIFT
 

VIEW COMPLETE PRO ACTION™ 180CC FLOW CHART 
INTAKE VALVE DIA.

2.020”

2.020”
EXHAUST VALVE DIA.
 1.600” 1.600”
MATERIAL
 CAST IRON ALUMINUM CAST IRON ALUMINUM
BARE CASTING PART #
 #35304
 #35004
 #35301
 #35001
FLAT TAPPET ASSEMBLY PART #
Assembled in-house using quality COMP Cams™ components
 #35304-01
 #35004-01
 #35301-01
 #35001-01
HYDRAULIC ROLLER ASSEMBLY PART #
Assembled in-house using quality COMP Cams™ components
 #35304-02
 #35004-02
 #35301-02
 #35001-02

Assembled in-house using quality COMP Cams™ components = Assembled in-house using quality COMP Cams™ components

RECOMMENDED PERIPHERAL COMPONENTS TECH SHEETS
Head Gasket:

Fel-Pro #1152
Intake Gasket:

Fel-Pro #1262

Exhaust Gasket:

Fel-Pro #1487
Head Studs:

ARP #154-4005, 289-302, 5.0L
ARP #154-4003, 351W

Rocker Arms:

COMP Cams® #1331-16
Lifters:

Determined by application
Pistons:

Determined by application
Pushrods:

Measure for Correct Length
Intake Manifold:

Determined by application
Spark Plugs:

See model-specific tech sheet
Head Torque:

See fastener mfg. specs
Intake Valve:

Stainless 2.020"

Exhaust Valve:

Stainless 1.600"
Flat Milling:

.006” per cc
Valve Angle:

20° intake/20° exhaust
Chamber Vol:

58cc or 64cc
#35001
#35301
#35004
#35304
#35001-01
#35301-01
#35004-01
#35304-01
#35001-02
#35301-02
#35004-02
#35304-02
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3416 Democrat Road • Memphis, TN 38118
Toll-Free Phone: (877) 776-4323 • Local Phone: (901) 259-1134 • Fax: (901) 368-1951
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