Chicago Facility: (800) 826-7403 / (773) 624-6111     |     Las Vegas Facility: (800) 426-8771 / (702) 649-7776

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

 

PART #ENGINE MFGCIDLITERYEARSNOTES
CH305BChevrolet3055.01996 – UpReplaces casting number:
12552520, 12557113, 12558059                   Intake runner 170CC
Combustion Chamber 58CC
CH305BAChevrolet3055.01996 – UpReplaces casting number:
12552520, 12557113, 12558059                   Intake runner 170CC
Combustion Chamber 58CC
ASSEMBLED
CH350AChevrolet3505.71955-86Universal
Intake runner 178CC
Combustion Chamber 76CC
With Heat Riser / 69-86 Intake manifold bolt pattern
7 bolt hole exhaust mounting
Perimeter valve cover mounting holes
CH350AAChevrolet3505.71955-86Universal
Intake runner 178CC
Combustion Chamber 76CC
With Heat Riser / 69-86 Intake manifold bolt pattern
7 bolt hole exhaust mounting
Perimeter valve cover holes
ASSEMBLED
CH350HChevrolet3505.71969-1986Replaces casting number:
083, 191, 193, 217, 810,
Intake runner 176CC
Combustion Chamber 64CC Vortec chamber
With Heat Riser / 69-86 Intake manifold bolt pattern
Perimeter valve cover holes
Recommended to be replaced in pairs.
CH350HAChevrolet3505.71969-1986Replaces casting number:
083, 191, 193, 217, 810,
Intake runner 176CC
Combustion Chamber 64CC Vortec chamber
With Heat Riser / 69-86 Intake manifold bolt pattern
Perimeter valve cover holes
Recommended to be replaced in pairs.
ASSEMBLED
CH350GChevrolet3505.71987-1995Replaces casting number:
083, 191, 193, 217, 810,
Intake runner 176CC
Combustion Chamber 64CC Vortec chamber
With Heat Riser / 87 95 Intake manifold bolt pattern
Center bolt down valve cover holes
Recommended to be replaced in pairs.
CH350GAChevrolet3505.71987-1995Replaces casting number:
083, 191, 193, 217, 810,
Intake runner 176CC
Combustion Chamber 64CC Vortec chamber
With Heat Riser / 87 95 Intake manifold bolt pattern
Center bolt down valve cover holes
Recommended to be replaced in pairs.
ASSEMBLED
CH350CChevrolet3505.71996-2006Replaces casting number 12558062, 10239906,
Intake runner 170CC
Combustion Chamber 64CC
CH350CAChevrolet3505.71996-2006Replaces casting number 12558062, 10239906,
Intake runner 170CC
Combustion Chamber 64CC
ASSEMBLED
CH350IChevrolet3505.7PERFORMANCEIMCA 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
With Heat Riser

** 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
View Image of CH350H

Spec Sheet

Spec Sheet CH350C

 


Order Online Today

ebaystore

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.

imca-1

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

imca-2

ebaystore