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Chevrolet Performance 19300955
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Chevrolet Performance® Summer Block Party Rebate
Expires on: September 30, 2019

Purchase Chevrolet Performance Engine Blocks Or Cylinder Heads and Receive up to $200 On a Prepaid Visa!

Chevrolet Performance Small Block Chevy Fast Burn Aluminum Cylinder Head, Assembled


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Chevrolet Performance Small Block Chevy Fast Burn Aluminum Cylinder Head, Assembled $1,048.00
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4 left in stock
Small Block Chevy Fast Burn Aluminum Cylinder Head
  • 210cc Intake Ports
  • 62cc Combustion Chambers
  • Valves: 2.000'' Intake/1.550'' Exhaust
  • Assembled
  • Sold Individually
  • Chevrolet Performance 19300955 Details

    "Fast Burn" Aluminum Cylinder Heads

    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.

  • Specifications:

    Sold individually
    Cylinder Head Style
    Guideplates Included
    Rocker Arm Studs Included
    Accessory Bolt Holes Drilled
    Cylinder Head Finish
    Cylinder Head Material
    CNC-Machined Combustion Chamber
    CNC-Machined Exhaust Runner
    CNC-Machined Intake Runner
    Damper Spring Included
    Exhaust Valves Included
    Heat Crossover
    Intake Valves Included
    Locks Included
    Machined for O-Ring
    Retainers Included
    Rocker Arm Nuts Included
    Rocker Arms Included
    Steam Holes Drilled
    Valve Guides Included
    Valve Seats Machined
    Valve Springs Included
    Valve Stem Seals Included
    Combustion Chamber Volume (cc)
    Intake Port Location
    Exhaust Port Location
    Oiling Style
    Through pushrod
    Intake Valve Diameter (in.)
    Exhaust Valve Diameter (in.)
    Valve Guide Material
    Intake Runner Volume (cc)
    Valve Seat Material
    Outside Diameter of Outer Spring (in.)
    Number of Springs Per Valve
    Retainer Material
    Lock Style
    7 degree
    Spark Plug Style
    Valve Stem Seal Style
    Manufacturer's Part Number:
    Shipping Weight:
    Package Height:
    Package Depth:
    Package Width:

    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. 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.

  • 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.

  • What would my compression ratio be if I swapped out the Vortec heads on my HT383 with these, And what head gaskets would I need to keep the compression ratio at 9.1:1?

    Asked by: WSSCC
    This will depend on the piston that is in your OEM engine, there are a few different engine combinations that have been used.
    Answered by: Rusty B
    Date published: 2019-07-21

    Will stock vortec exhaust manifold work on these heads

    Asked by: Drfranke
    This will use an LT1 or LT4 style exhaust manifold.
    Answered by: Rusty B
    Date published: 2019-07-21

    Will these heads work with a 1988 tpi system with the angled center intake bolts?

    Asked by: Muddyluke
    This head will not work with the angled center bolts.
    Answered by: Jon Jegs Tech
    Date published: 2019-07-21

    What do these heads weight

    Asked by: Jaime big
    This head weighs approximately 26 lbs each.
    Answered by: Rusty B
    Date published: 2017-12-07
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