Dart Pro 1 Aluminum Cylinder Heads 11721143P

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Race-proven features and affordable pricing make these Dart Pro 1 355-T6 aluminum cylinder heads one of the biggest values in racing. They come available as bare castings or fully assembled. The fully assembled heads include stainless steel valves, valve springs, retainers, locks, seals, studs, and guideplates. They come with your choice of angled or straight plug locations and accept all early and late model accessory brackets. Sold as pair.

Part Type:Cylinder Heads

Product Line:Dart Pro 1 Aluminum Cylinder Heads

Cylinder Head Style:Assembled

Cylinder Head Material:Aluminum

Cylinder Head Finish:Natural

Combustion Chamber Volume (cc):64

CNC-Machined Combustion Chamber:No

Intake Runner Volume (cc):230cc

Exhaust Runner Volume (cc):75cc

CNC-Machined Intake Runner:No

CNC-Machined Exhaust Runner:No

Combustion Chamber Style:Heart

Intake Port Location:Standard

Exhaust Port Shape:Square

Exhaust Port Location:Standard

Spark Plug Style:Straight

Intake Valves Included:Yes

Intake Valve Diameter (in):2.080 in.

Exhaust Valves Included:Yes

Exhaust Valve Diameter (in):1.600 in.

Valve Springs Included:Yes

Maximum Valve Lift (in):0.690 in.

Outside Diameter of Outer Spring (in):1.550 in.

Damper Spring Included:Yes

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:Positive stop

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:Center and 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/3-angle exhaust

Valve Seat Material:Ductile iron

Steam Holes Drilled:No

Oiling Style:Through pushrod

Machined for O-Ring:No

Heat Crossover:No

Call 316-775-7771 to purchase.


WARNING: This product contains a chemical known to the State of California to cause cancer and reproductive harm. See https://www.p65warnings.ca.gov/ for details.


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