Dart BB-Chevy Pro 1 Aluminum Heads Dart Pro Stock Technology at Unbeatable Prices 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, valvetrain components, and intake manifolds. Race-Proven Pro 1 Features Advanced manufacturing techniques provide precision castings Extra-long intake valves & rolled valve angles Magnesium bronze valve guides reduce stem wear & extend cylinder head life Multi-angle intake seats & radiused exhaust seats dramatically increase airflow Hardened exhaust seats compatible with unleaded gasoline Exhaust ports raised .300" (Requires 1" longer head bolts next to exh ports. Use #070-135-3605.) Spark plug holes machined for gasketed 3/4" reach plugs Sold individually

301-19474139

BBC Pro 1 Assembled CNC Head Valves: 2.300" Int/1.880" Exh Triple Valve Springs: 1.650" View this item

$2,139.99 Ships 02/21/12

301-19574136

BBC Pro 1 Assembled CNC Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.625" (250 lbs @ 2.00", .790" max lift) More info on Dart 19574136

$2,021.99 Ships 02/21/12

301-19574139

BBC Pro 1 Assembled CNC Head Valves: 2.300" Int/1.880" Exh Triple Valve Springs: 1.625" View this item

$2,139.99 Ships 02/21/12

301-19000010

BBC Pro 1 Bare Cylinder Head Valves: 2.250" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19000070

BBC Pro 1 Bare Cylinder Head Valves: 2.190" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19000111

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Valve Springs: 1.550" View this item

$1,299.99 Ships 02/21/12

301-19000112

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.550" View this item

$1,373.99 Ships 02/21/12

301-19000116

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.625" View this item

$1,445.99 Ships 02/21/12

301-19000171

BBC Pro 1 Assembled Cylinder Head Valves: 2.190" Int/1.880" Exh Valve Springs: 1.550" View this item

$1,298.99 Ships 02/21/12

301-19000172

BBC Pro 1 Assembled Cylinder Head Valves: 2.190" Int/1.880" Exh Dual Valve Springs: 1.550" View this item

$1,373.99 Ships 02/21/12

301-19900111

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Valve Springs: 1.550" View this item

$1,299.99 Ships 03/05/12

301-19900112

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.550" View this item

$1,373.99 Ships 03/05/12

301-19900171

BBC Pro 1 Assembled Cylinder Head Valves: 2.190" Int/1.880" Exh Valve Springs: 1.550" View this item

$1,299.99 Ships 03/05/12

301-19900172

BBC Pro 1 Assembled Cylinder Head Valves: 2.190" Int/1.880" Exh Dual Valve Springs: 1.550" View this item

$1,373.99 Ships

301-19000010M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.250" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19000070M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.190" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19000112M

BBC Pro 1 Marine Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Hydraulic Valve Springs: 1.550" View this item

$1,639.99 Ships 02/21/12

301-19000172M

BBC Pro 1 Marine Assembled Cylinder Head Valves: 2.190" Int/1.880" Exh Hydraulic Valve Springs: 1.550" View this item

$1,639.99 Ships 02/21/12

301-19100010

BBC Pro 1 Bare Cylinder Head Valves: 2.250" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19100030

BBC Pro 1 Bare Cylinder Head Valve Job: 2.300" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19100111

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Valve Springs: 1.550" (145 lbs @ 1.90", .660" max lift) More info on Dart 19100111

$1,299.99 Ships 02/21/12

301-19100112

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.90", .690" max lift) More info on Dart 19100112

$1,373.99 Ships 02/21/12

301-19100116

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.625" (250 lbs @ 2.00", .790" max lift) More info on Dart 19100116

$1,445.99 Ships 02/21/12

301-19100132

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.900'', .690'' Max Lift) More info on Dart 19100132

$1,373.99 Ships 02/21/12

301-19100136

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.625" View this item

$1,445.99 Ships 02/21/12

301-19200010

BBC Pro 1 Bare Cylinder Head Valves: 2.250" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19200030

BBC Pro 1 Bare Cylinder Head Valves: 2.300" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19200111

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Valve Springs: 1.500" (145 lbs @ 1.90", .660" max lift) More info on Dart 19200111

$1,299.99 Ships 02/21/12

301-19200112

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.500" View this item

$1,373.99 Ships 02/21/12

301-19200116

BBC Pro 1 Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Dual Valve Springs: 1.625" (250 lbs @ 2.00", .790" max lift) More info on Dart 19200116

$1,445.99 Ships 02/21/12

301-19200132

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.90", .690" max lift) More info on Dart 19200132

$1,373.99 Ships 02/21/12

301-19200136

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.625" (250 lbs @ 2.00", .790" max lift) More info on Dart 19200136

$1,445.99 Ships 02/21/12

301-19300030

BBC Pro 1 Bare Cylinder Head Valves: 2.300" Int/1.880" Exh View this item

$964.99 Ships 02/21/12

301-19300132

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.90", .690" max lift) More info on Dart 19300132

$1,373.99 Ships 02/21/12

301-19300136

BBC Pro 1 Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Dual Valve Springs: 1.625" (250 lbs @ 2.00", .790" max lift) More info on Dart 19300136

$1,445.99 Ships

301-19100010M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.250" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19100030M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.300" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19100070M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.190" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19100112M

BBC Pro 1 Marine Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Hydraulic Valve Springs: 1.550" View this item

$1,639.99 Ships 02/21/12

301-19200030M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.300" Int/1.880" Exh View this item

$1,079.99 Ships 02/21/12

301-19200112M

BBC Pro 1 Marine Assembled Cylinder Head Valves: 2.250" Int/1.880" Exh Hydraulic Valve Springs: 1.550" View this item

$1,639.99 Ships 02/21/12

301-19200132M

BBC Pro 1 Marine Assembled Cylinder Head Valves: 2.300" Int/1.880" Exh Hydraulic Valve Springs: 1.550" View this item

$1,639.99 Ships 02/21/12

301-19300030M

BBC Pro 1 Marine Bare Cylinder Head Valves: 2.300" Int/1.880" Exh View this item

$1,079.99 Ships 03/05/12