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
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
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
Call 316-775-7771 to purchase.
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