t a  e 
REF NO. Part categories Parameter
ENGINETECH : EHC293 Cylinder Head
ENGINETECH : CH1043R Cylinder Head
ENGINETECH : CH1055R Cylinder Head
ENGINETECH : CH1056R Cylinder Head
ENGINETECH : CH1057R Cylinder Head
ENGINETECH : CH1059R Cylinder Head
ENGINETECH : CH1060R Cylinder Head
GM GENUINE : 12641093 Cylinder Head
  • Combustion Chamber Volume (CI): 3.325 ; 
  • Combustion Chamber Volume (cc): 54.5 ; 
  • Exhaust Valve Diameter (in): 1.205 ; 
  • Exhaust Valve Diameter (mm): 30.6 ; 
  • Intake Valve Diameter (in): 1.455 ; 
  • Intake Valve Diameter (mm): 36.96 ; 
  • Material: Aluminum ; 
  • Valve Spring Diameter (in): 1.024 ; 
  • Valve Spring Diameter (mm): 26 ; 
  • Valve Stem Diameter (MM): 5.965 ; 
  • Valve Stem Diameter (in): 0.235 ; 
ENGINETECH : CH1119R Cylinder Head
ENGINETECH : CH1120R Cylinder Head
CYLINDER HEAD EXPRESS : GM3601 Cylinder Head
  • Camshaft Type: DOHC ; 
  • Engine Valve Quantity: 24 ; 
  • Head Casting Number: 0041 ; 
CYLINDER HEAD EXPRESS : GM3807N Cylinder Head
  • Camshaft Type: OHV ; 
  • Engine Valve Quantity: 12 ; 
  • Head Casting Number: 4781 ; 
GM GENUINE : 12608280 Cylinder Head
  • CNC Ported: No ; 
  • Combustion Chamber Volume (CI): 3.0206 ; 
  • Combustion Chamber Volume (cc): 49.5 ; 
  • Exhaust Valve Diameter (in): 1.19 ; 
  • Exhaust Valve Diameter (mm): 30.25 ; 
  • Guide Plates Included: No ; 
  • Head Casting Number: 12608279 ; 
  • Intake Valve Diameter (in): 1.38 ; 
  • Intake Valve Diameter (mm): 35.1 ; 
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 5.9625 ; 
  • Valve Stem Diameter (in): 0.235 ; 
GM GENUINE : 12675702 Cylinder Head
  • CNC Ported: No ; 
  • Exhaust Valve Diameter (in): 0.92 ; 
  • Exhaust Valve Diameter (mm): 23.3 ; 
  • Guide Plates Included: No ; 
  • Head Casting Number: 12668719 ; 
  • Intake Valve Diameter (in): 1.1 ; 
  • Intake Valve Diameter (mm): 28 ; 
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 4.965 ; 
  • Valve Stem Diameter (in): 0.195 ; 
GM GENUINE : 12626381 Cylinder Head
  • Material: Aluminum ; 
GM GENUINE : 12641095 Cylinder Head
  • Combustion Chamber Volume (CI): 3.325 ; 
  • Combustion Chamber Volume (cc): 54.5 ; 
  • Exhaust Valve Diameter (in): 1.205 ; 
  • Exhaust Valve Diameter (mm): 30.6 ; 
  • Intake Valve Diameter (in): 1.455 ; 
  • Intake Valve Diameter (mm): 36.96 ; 
  • Material: Aluminum ; 
  • Valve Spring Diameter (in): 1.024 ; 
  • Valve Spring Diameter (mm): 26 ; 
  • Valve Stem Diameter (MM): 5.965 ; 
  • Valve Stem Diameter (in): 0.235 ; 
GM GENUINE : 12641100 Cylinder Head
  • Combustion Chamber Volume (CI): 3.112 ; 
  • Combustion Chamber Volume (cc): 51 ; 
  • Exhaust Valve Diameter (in): 1.205 ; 
  • Exhaust Valve Diameter (mm): 30.6 ; 
  • Intake Valve Diameter (in): 1.384 ; 
  • Intake Valve Diameter (mm): 35.16 ; 
  • Material: Aluminum ; 
  • Valve Spring Diameter (in): 1.024 ; 
  • Valve Spring Diameter (mm): 26 ; 
  • Valve Stem Diameter (MM): 5.965 ; 
  • Valve Stem Diameter (in): 0.235 ; 
GM GENUINE : 12684222 Cylinder Head
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 6.01 ; 
  • Valve Stem Diameter (in): 0.24 ; 
GM GENUINE : 12686233 Cylinder Head
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 6.01 ; 
  • Valve Stem Diameter (in): 0.24 ; 
GM GENUINE : 12690428 Cylinder Head
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 6.01 ; 
  • Valve Stem Diameter (in): 0.24 ; 
GM GENUINE : 12692323 Cylinder Head
GM GENUINE : 12694943 Cylinder Head
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 4.4 ; 
  • Valve Stem Diameter (in): 0.17 ; 
GM GENUINE : 19259022 Cylinder Head
GM GENUINE : 19259025 Cylinder Head
  • Width (IN): 0.6 ; 
GM GENUINE : 19329667 Cylinder Head
GM GENUINE : 19329668 Cylinder Head
GM GENUINE : 19329673 Cylinder Head
GM GENUINE : 19329674 Cylinder Head
  • Material: Aluminum ; 
GM GENUINE : 19419467 Cylinder Head
  • Width (IN): 4.95 ; 
GM GENUINE : 55514769 Cylinder Head
  • Combustion Chamber Volume (CI): 31.5 ; 
  • Exhaust Valve Diameter (in): 0.92 ; 
  • Exhaust Valve Diameter (mm): 23.3 ; 
  • Guide Plates Included: No ; 
  • Head Casting Number: 55512233 ; 
  • Intake Valve Diameter (in): 28 ; 
  • Intake Valve Diameter (mm): 1.1 ; 
  • Material: Aluminum ; 
  • Valve Angle: 46 ; 
  • Valve Spring Diameter (in): 0.84 ; 
  • Valve Spring Diameter (mm): 21.25 ; 
  • Valve Stem Diameter (MM): 4.97 ; 
  • Valve Stem Diameter (in): 0.2 ; 
GM GENUINE : 12578243 Cylinder Head
  • Material: Aluminum ; 
  • Volume (cu in): 1690.555cu in ; 
GM GENUINE : 12624612 Cylinder Head
  • Material: Aluminum ; 
GM GENUINE : 12633962 Cylinder Head
  • Material: Aluminum ; 
GM GENUINE : 12633963 Cylinder Head
  • Material: Aluminum ; 
GM GENUINE : 12690422 Cylinder Head
  • Material: Aluminum ; 
  • Valve Stem Diameter (MM): 6.01 ; 
  • Valve Stem Diameter (in): 0.24 ; 
GM GENUINE : 19333093 Cylinder Head
GM GENUINE : 12703173 Cylinder Head
  • Exhaust Valve Diameter (in): 0.86 ; 
  • Exhaust Valve Diameter (mm): 21.97 ; 
  • Guide Plates Included: No ; 
  • Intake Valve Diameter (in): 28 ; 
  • Intake Valve Diameter (mm): 1.1 ; 
  • Valve Angle: 45.33 ; 
  • Valve Stem Diameter (MM): 4.96 ; 
  • Valve Stem Diameter (in): 0.2 ; 
GM GENUINE : 12718556 Cylinder Head
CYLINDER HEAD EXPRESS : CI532B Cylinder Head
  • Assembled: No ; 
  • Camshaft Included: No ; 
  • Camshaft Type: DOHC ; 
  • Casting Material: Aluminum ; 
  • Engine Valve Quantity: 16 ; 
  • Head Casting Number: 291,622,669 ; 
  • Lifter Type: Hyd Lifters ; 
GM GENUINE : 55497386 Cylinder Head
  • Exhaust Valve Diameter (in): 1 ; 
  • Exhaust Valve Diameter (mm): 25.5 ; 
  • Intake Valve Diameter (in): 1.17 ; 
  • Intake Valve Diameter (mm): 29.8 ; 
  • Material: Aluminum ; 
  • Valve Spring Diameter (in): 0.909 ; 
  • Valve Spring Diameter (mm): 23.1 ; 
  • Volume (cu in): 1844.4031cu in ; 
CYLINDER HEAD EXPRESS : CI532L Cylinder Head
GM GENUINE : 12718561 Cylinder Head
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    Size/Parameters

    Annotated Parameter name Size range Unit
        

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