Small Block Chevy Fast Burn Aluminum Cylinder Head, Assembled
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CHEVROLET PERFORMANCEPART NUMBER: 809-19300955

Small Block Chevy Fast Burn Aluminum Cylinder Head, Assembled

$1,23347
ShippingShips on 09/14/2026
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"Fast Burn" Aluminum Cylinder Heads
    Small Block Chevy Fast Burn Aluminum Cylinder Head
  • 210cc Intake Ports
  • 62cc Combustion Chambers
  • Valves: 2.000'' Intake/1.550'' Exhaust
  • Assembled
  • Sold Individually

    This 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.

    Head is sold assembled with 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.

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.

Show MoreHead 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.

Part TypeCylinder Head
Product LineChevrolet Performance Small Block Chevy Fast Burn Aluminum Cylinder Head
BrandCHEVROLET PERFORMANCE
Package Height10.5
Package Width12.3
Package Length23.9
Weight26.13 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Exhaust Valves IncludedYes
Locks IncludedYes
Retainers IncludedYes
Lock Style7 degree
Guideplates IncludedNo
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedNo
Valve Seat MaterialSteel
Heat CrossoverNo
Number Of Springs Per ValveSingle
Valve Springs IncludedYes
Spark Plug StyleAngled
Damper Spring IncludedNo
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
QuantitySold individually
Valve Stem Seals IncludedYes
Intake Valve Diameter2 in (50.8 mm)
Accessory Bolt Holes DrilledYes
Exhaust Port LocationStandard
Valve Guide MaterialBronze
Outside Diameter Of Outer Spring1.25 in (31.8 mm)
Combustion Chamber Volume (Cc)62
Machined For O-RingNo
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Cylinder Head StyleAssembled
Valve Stem Seal StyleUmbrella
Retainer MaterialSteel
Intake Runner Volume (Cc)210
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.55 in (39.37 mm)
Vendor Part Number19300955
Package Qty1
Package TypeEA
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