Dart SB-Chevy Pro 1 Aluminum Heads Product images may differ from actual product appearance. The Best Value in High-Performance Aluminum Heads for Small Block Chevy Standard Pro 1 Cylinder Heads deliver outstanding airflow using advanced tooling & state-of-the-art casting techniques while the CNC-ported version provides even more "flow for your dough." Engineered for easy installation as bolt-on replacements for most conventional 23° heads, Pro 1 heads accept standard small block pistons, headers, and valvetrain components. Dart improved the original design with thicker decks and high-capacity water jackets that increase reliability in high-performance applications. Hardened exhaust seats and durable bronze valve guides greatly extend cylinder head life. Sold individually. Click the image for more about standard Pro 1 heads.

301-11970040P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.08" Int/1.60" Exh Angle Plug View this item

$1,137.99 Ships 02/21/12

301-11971143

SBC Standard Pro 1 Assembled CNC Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.90", .690" max lift) Angle Plug More info on Dart 11971143

$1,275.99 Ships 02/21/12

301-11971143P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" (195 lbs @ 1.90", .690" max lift) Angle Plug More info on Dart 11971143P

$1,429.99 Ships 02/21/12

301-11110010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11111111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Angle Plug View this item

$714.99 Ships 02/21/12

301-11111112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$778.99 Ships 02/21/12

301-11120010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11121112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug View this item

$779.99 Ships

301-11121111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$714.99 Ships

301-11210010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11211111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Angle Plug View this item

$714.99 Ships 02/21/12

301-11211112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$779.99 Ships 02/21/12

301-11220010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11221111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Straight Plug View this item

$714.99 Ships

301-11221112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug View this item

$779.99 Ships

301-11310010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11311111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Angle Plug More info on Dart 11311111P

$714.99 Ships 02/21/12

301-11311112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$779.99 Ships 02/21/12

301-11311113P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug View this item

$842.99 Ships 02/21/12

301-11320010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11321111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" (110 lbs @ 1.700'', .520" Max Lift) Straight Plug More info on Dart 11321111P

$714.99 Ships

301-11321112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug View this item

$778.99 Ships

301-11321113P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12

301-11410010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11411111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Angle Plug View this item

$714.99 Ships 02/21/12

301-11411112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$779.99 Ships 02/21/12

301-11411113P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug View this item

$842.99 Ships 02/21/12

301-11420010P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.02" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11421111P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Valve Springs: 1.250" Straight Plug View this item

$714.99 Ships

301-11421112P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug View this item

$779.99 Ships

301-11421113P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.02" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12

301-11510020P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.05" Int/1.60" Exh Angle Plug View this item

$556.99 Ships

301-11511122P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$779.99 Ships 02/21/12

301-11511123P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug View this item

$842.99 Ships 02/22/12

301-11520020P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.05" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11521122P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug More info on Dart 11521122P

$779.99 Ships

301-11521123P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12

301-11610020P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.05" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11611122P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.437" Angle Plug View this item

$779.99 Ships 02/21/12

301-11611123P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug View this item

$842.99 Ships 02/21/12

301-11620020P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.05" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11621122P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.437" Straight Plug View this item

$779.99 Ships 02/21/12

301-11621123P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.05" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12

301-11710040P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.08" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/17/12

301-11711143P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug More info on Dart 11711143P

$842.99 Ships

301-11720040P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.08" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11721143P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12

301-11810040P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.08" Int/1.60" Exh Angle Plug View this item

$556.99 Ships 02/21/12

301-11811143P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" Angle Plug View this item

$842.99 Ships 02/21/12

301-11820040P

SBC Platinum Pro 1 Bare Cylinder Head Valves: 2.08" Int/1.60" Exh Straight Plug View this item

$556.99 Ships 02/21/12

301-11821143P

SBC Platinum Pro 1 Assembled Cylinder Head Valves: 2.08" Int/1.60" Exh Dual Valve Springs: 1.550" Straight Plug View this item

$842.99 Ships 02/21/12