Dart Big Block Chevy Pro 1 Aluminum Cylinder Heads 19300136

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The Dart Big Block Chevy Pro 1 Aluminum Heads were inspired by Dart's championship-winning Pro Stock designs and available with 310, 325, 345, or 355cc oval or rectangular port intake runners, big block Pro 1 aluminum cylinder heads deliver out-of-the-box airflow that smokes the competition! Specifically engineered for street performance, bracket racing and Super Eliminator engines yet can be used with off-the-shelf pistons, valve train components and intake manifolds! Sold as pair.

Race-Proven Pro 1 Features:


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):121


CNC-Machined Combustion Chamber:No


Intake Runner Volume (cc):345cc


Exhaust Runner Volume (cc):129cc


CNC-Machined Intake Runner:No


CNC-Machined Exhaust Runner:No


Combustion Chamber Style:Heart


Intake Port Shape:Rectangular


Intake Port Location:Standard


Exhaust Port Shape:Round


Exhaust Port Location:Raised


Intake Valves Included:Yes


Intake Valve Diameter (in):2.300 in.


Exhaust Valves Included:Yes


Exhaust Valve Diameter (in):1.880 in.


Valve Springs Included:Yes


Maximum Valve Lift (in):0.790 in.


Outside Diameter of Outer Spring (in):1.625 in.


Damper Spring Included:No


Number of Springs Per Valve:Dual


Retainers Included:Yes


Retainer Material:Titanium


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:7/16-20 in.


Rocker Arms Included:No


Rocker Arm Nuts Included:No


Guideplates Included:Yes


Guideplate Pushrod Size:3/8 in.


Valve Cover Mounting Style:Perimeter bolt


Accessory Bolt Holes Drilled:Yes


Intake Valve Angle:24


Exhaust Valve Angle:15


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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