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Vehicle Info NeededFast Burn Aluminum Cylinder Head Small Block Chevy, Assembled
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Lowest Price GuaranteeThis Cylinder head assembly is identified by the Chevrolet "Bowtie" logo engraved on the end surface of the cylinder head, this replaces the "GM Performance Parts" logo that was formerly used. This head is assembled using Chevrolet Performance "blue" beehive-style valve springs, part 809-12625033, using compatible spring retainers, seats, and split key locks. These components were changed to provide maximum durability and stability at the sustained RPM typically experienced in circle track racing.
Includes the following Chevrolet components:
- Bare Head - 12497186
- Intake Valves - 12555331
- Exhaust Valves - 12551313
- Valve Springs - 12625033
- Rocker Studs - 12552126
- Valve Stem Seals - 10212810
Installation Notes:
- Exhaust Gasket - 375-1470 (may require minor trimming)
- Intake Gasket - 809-12497760 or 375-1289
- Head Gasket - must use head gaskets with stainless steel fire rings 809-10105117 or 809-12557236 used on Chevrolet Performance Engines
19417592 supersedes 19300955
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
This Chevrolet Performance Small Block Chevy "Fast Burn" Aluminum Cylinder Head has the highest performance potential of any 23° small block head developed by Chevrolet using flat top pistons. It adds 30 bolt-on horsepower when used on the Chevy ZZ4 crate engine. 62cc fast burn combustion chambers produce higher cylinder pressures by burning more of the available fuel before the piston starts its power stroke downward.
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Head surfaces and rocker rails are CNC-machined to exact tolerances, thus eliminating the need for blueprinting. D-shaped ports and runners require no additional porting (but can be for all-out racing applications). This cylinder head fits 1958-Present small block Chevy 283-400 engines with a conventional water flow design (cannot be used on LT1, LT4, or LS1 engine with reverse water flow). The cylinder head is completely assembled with valves, springs, retainers, and 3/8'' rocker studs that require the use of self-aligning rocker arms. Specifications- Aluminum Construction
- Intake Runner: 210cc Port raised .240''
- Exhaust Runner: 78cc ''D'' Port raised .200''
- Combustion Chamber Volume: 62cc
- Deck: .400'' thick (Can be milled)
- Valve Diameter: 2.00'' Intake, 1.55'' Exhaust
- Valve Spring Seat: 1.48''
- Valve Springs: .530'' Maximum Valve Lift
- Rocker Studs: 3/8'' Top, 7/16'' Bottom
- Spark Plugs: Angled, 5/8'' Hex, 3/4'' Reach, Tapered Seat
- Dual Intake Bolt Pattern for Vortec (recommended) and Early Intakes
- Dual Valve Cover Bolt Pattern for Perimeter or Centerbolt
JEGS Easy Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
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CHEVROLET PERFORMANCE
Fast Burn Aluminum Cylinder Head Kit Small Block Chevy
Part Number : 809-19417592K
CHEVROLET PERFORMANCE
Part Number : 809-19417592K
