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RHS Pro Action Small Block Chevrolet Cylinder Heads 12317-01

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Cylinder Head, Pro Action, Cast Iron, Assembled, 64cc Chamber, 180cc Intake Runner, Chevy, Small Block, Each

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Brand: Racing Head Service (RHS)

Manufacturer's Part Number: 12317-01

Part Type: Cylinder Heads

Product Line: RHS Pro Action Small Block Chevrolet Cylinder Heads

Summit Racing Part Number: RHS-12317-01

UPC: 036584135531

Cylinder Head Style: Assembled

Cylinder Head Material: Cast iron

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 64

CNC-Machined Combustion Chamber: No

Intake Runner Volume (cc): 180cc

Exhaust Runner Volume (cc): 74cc

CNC-Machined Intake Runner: No

CNC-Machined Exhaust Runner: No

Intake Port Shape: Rectangular

Intake Port Location: Standard

Exhaust Port Shape: Rectangular

Exhaust Port Location: Standard

Spark Plug Style: Straight

Intake Valves Included: Yes

Intake Valve Diameter (in): 2.020 in.

Exhaust Valves Included: Yes

Exhaust Valve Diameter (in): 1.600 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.560 in.

Outside Diameter of Outer Spring (in): 1.460 in.

Damper Spring Included: Yes

Number of Springs Per Valve: Single

Retainers Included: Yes

Retainer Material: Steel

Locks Included: Yes

Lock Style: 7 degree

Valve Stem Seals Included: Yes

Rocker Arm Studs Included: Yes

Rocker Arm Nut Thread Size: 3/8-24 in.

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: Yes

Guideplate Pushrod Size: 5/16 in.

Valve Cover Mounting Style: Perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 23

Exhaust Valve Angle: 23

Valve Guides Included: Yes

Valve Guide Material: Manganese bronze

Valve Seats Machined: Yes

Valve Seat Machine Style: 4-angle intake/4-angle exhaust

Valve Seat Material: Steel tungsten alloy

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Calculator Compression Calculator

Pro Action cylinder heads by RHS deliver exceptional performance gains for all small block Chevy owners. They come available in both aluminum and cast iron and in a wide variety of intake runner and combustion chamber volumes. Pro Action small block Chevrolet cylinder heads feature straight or angled spark plug configurations, accept valve spring diameters up to 1.550 in., and work with all popular small block Chevy valvetrain components.

Additional features include:

* 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

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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