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Chevrolet Performance Oval Port Aluminum Cylinder Heads 12363390

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$1,107.97

Cylinder Head, Oval Port, Aluminum, Assembled, 110cc Chamber, 290cc Intake Runner, Chevy, 454, Each

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Estimated Ship Date: 8/18/2014 (if ordered today) Would you rather pick it up? Select Location

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Manufacturer's Part Number: 12363390
Part Type: Cylinder Heads
Summit Racing Part Number: NAL-12363390

Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 110
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 290cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Combustion Chamber Style: Semi-open
Intake Port Shape: Oval
Intake Port Location: Standard
Exhaust Port Shape: D-port
Exhaust Port Location: Standard
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.250 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.880 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.680 in.
Outside Diameter of Outer Spring (in): 1.550 in.
Damper Spring Included: No
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 10 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: Umbrella
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 7/16-20 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 3/8 in.
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Guide Material: Bronze
Valve Seats Machined: No
Valve Seat Material: Steel
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.

These Chevrolet Performance oval port aluminum cylinder heads are fully machined with semi-finished bronze alloy guides and valve seats that use 2.19 in. intake and 1.88 in. exhaust valves. They feature high-velocity 290cc intake runners to enhance midrange throttle response and torque. The exhaust runner volume is 110cc, which will provide a very streetable compression ratio. The valve spring diameter is 1.550 in. with 7/16 in. rocker stud holes. The heads will accept all stock accessory brackets.

Warranty

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

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