The Name You Trust for Engine Parts, Cores, & Recycling

Our stock replacement cylinder heads live up to EQ’s reputation for quality parts and incredible service. This assures you of the highest value and quality in cast cylinder heads for Chevrolet vehicles. In fact, if you’re ready to replace a worn out or cracked cylinder head, you won’t find a better product available anywhere.

What Makes an EQ Cylinder Head better than the rest?

  • Highest grade cast iron material used in manufacturing
  • Thicker decks for greater strength
  • Superior port finish for increased flow
  • Improved flow design to resist cracking
  • Redesigned water flow for greater thermal conductivity
  • Hardened exhaust seats
  • CNC machined guides and seats
  • 3 angle valve finish
  • Parts and labor warranty *
  • Assembled heads use OE quality stainless steel valve, springs, retainers, keepers and viton seals.
  • 25 point quality check on every head

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CHEVROLETCIDLITERYEARS
NOTESIMAGE
EQ-CH305B3055.01996 - 2002REPLACES CASTING NUMBERS:12552520, 12557113, 12558059, INTAKE RUNNER 170CC, COMBUSTION CHAMBER 58CCEQ-CH305B
EQ-CH305BA3055.01996 - 2002REPLACES CASTING NUMBERS:12552520, 12557113, 12558059, INTAKE RUNNER 170CC, COMBUSTION CHAMBER 58CC – ASSEMBLEDEQ-CH305BA
EQ-CH350AA3505.71955 - 1986Universal / Intake runner 178CC / Combustion Chamber 76CC, With Heat Riser / 69-86 Intake manifold bolt pattern, 7-bolt hole exhaust mounting / Straight spark plug, Perimeter valve cover holes – ASSEMBLEDEQ-CH350AA
EQ-CH350G3505.71987 - 1995REPLACES CASTING NUMBERS: 14101083, 14096217, 14102191, 14102193, INTAKE RUNNER 176CC / COMBUSTION CHAMBER 64CC VORTEC STYLE, WITH HEAT RISER / 87 95 INTAKE MANIFOLD BOLT PATTERN, CENTER BOLT DOWN VALVE COVER HOLES / ANGLE SPARK PLUG, RECOMMENDED TO BE REPLACED IN PAIRSEQ-CH350G
EQ-CH350GA3505.71987 - 1995REPLACES CASTING NUMBERS: 14101083, 14096217, 14102191, 14102193, Intake runner 176CC / Combustion Chamber 64CC Vortec style, With Heat Riser / 87 95 Intake manifold bolt pattern, Center bolt down valve cover holes / Angle spark plug, Recommended to be replaced in pairs – ASSEMBLEDEQ-CH350GA
EQ-CH350C3505.71996 - 2006REPLACES CASTING NUMBER: 12558062, 10239906, INTAKE RUNNER 170CC / COMBUSTION CHAMBER 64CC, STRAIGHT SPARK PLUGEQ-CH350C
EQ-CH350CA3505.71996 - 2006REPLACES CASTING NUMBER: 12558062, 10239906, Intake runner 170CC / Combustion Chamber 64CC, Straight spark pluG – ASSEMBLEDEQ-CH350CA
EQ-CH350I3505.71955 - 1986 PERFORMANCEIMCA SANCTIONED SPORT MOD HEAD, INTAKE RUNNER 178CC / COMBUSTION CHAMBER 76CC, 69-86 INTAKE MANIFOLD BOLT PATTERN / 7-BOLT HOLE EXHAUST MOUNTING, PERIMETER VALVE COVER HOLES / STRAIGHT SPARK PLUG / WITH HEAT RISEREQ-CH350I

** excludes performance product. See Warranty Page for complete details


Articles on EQ Cylinder Heads

Vortec Small Block Build – Popular Hot Rodding Magazine 

Small-Block Engine Build – Son Of Sledgehammer

Budget Engine Build – Popular Hot Rodding Magazine

Images of EQ Cylinder Heads

View Image of CH305B

View Image of CH350C

View Image of CH350G

Spec Sheet

Spec Sheet CH350C

 


EQ is Track Proven in IMCA Competition

EQ is a general sponsor of the International Motor Contest Association (IMCA) and the title sponsor of the IMCA Wild West Modified Tour. EQ cylinder heads have grown both in acceptance and usage with over 400 racers using EQ heads in multiple IMCA divisions.

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Whether you are a race team or a professional engine builder, EQ is the approved supplier for the IMCA Sport Modified and Hobby Stock Cylinder Head. Part # EQ-CH350I is a direct stock replacement for the Chevy 350 cylinder head with a 76cc combustion chamber, 1.94 intake valves and 1.50 exhaust valves.

  • Thicker decks for greater strength
  • CNC machined guides and seats
  • Superior port finish for increased flow
  • 3-angle valve finish
  • Machined integral guides
  • Hardened exhaust seats
  • Redesigned water flow for greater thermal conductivity
  • Each head serial numbered, with an IMCA logo branded on it, verified by IMCA

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