EQ CYLINDER HEADS: PERFORMANCE 



EngineQuest® (EQ) offers a full line of high-performance and stock cylinder heads for engine builders. With thousands of SKUs available to ship today, we’ll help you keep your inventory minimal and always have the cylinder head or hard-to-find engine part you need.

Along with quality and durability, we give you the highest value and unparalleled customer support.

EQ Performance Cylinder Heads: More Bang for the Buck!


Engine enthusiasts agree: EQ makes the best-performing, best-priced cylinder heads for maximum power with minimum effort. Leaving the factory with an ‘as-cast’ shape, they’re ready to install right out of the box, requiring no additional machining, porting or polishing. Just install the valve train, bolt on – and hold on!

Our 23 degree performance cylinder heads feature Flow-Cast Technology, the latest advancement in air-flow design. In fact, they were voted Best of Tech by Popular Hot Rodding. Vehicles running with EQ performance heads out-gun the competition on race tracks across the nation.

 

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The EQ Cylinderhead Advantage


Things you should know about EQ Cylinder Heads


Things you should know about EQ Cylinder Heads


Manufactured Exclusively for EQ in Queensland, Australia by Toowoomba Metal Technologies.



  • On-going design improvements constantly improves flow, so heads are more efficient than previous versions. Casting does not occur until flow numbers and Dyno numbers exceed perviously

       PUBLISHED numbers, averaging 10 - 15 CFM greater than the other manufacturers.



  • Cast at an ISO 9001 facility where one head from the beginning of each run is digitally checked for all tolerances, and each head is checked prior to being  S  s         sssssssss ss jhjhjh

       shipped to ensure EQ’s number one concern, consistent and maximum quality.



  •  Manufactured with a .4375 thick head deck, enabling better heat transfer, and allowing for a better machining platform for decking.

  •  EQ is the only company to manufacture a LOW RAIL valve cover. Our early GM head has a machined valve cover rail that enables the installer to run the head in an early  GMgg

       GM vehicle where valve cover clearance is an issue.



  • EQ uses only phosphorous bronze guides in the performance head line. 

  • Using a DURA BOND 30000 series exhaust seat in both the stock replacement and the performance cylinder heads.

  • A TRUE Vortec cylinder head! Unlike the competition’s cylinder head, where a late model bolt pattern is applied to an early head, the EQ Vortec uses the latest in Vortec technology in our combustion chamber. End Result? More power. 

  • Priced competitively when compared to all other cast iron cylinder heads.

  • Sold through traditional engine parts distributors and all sales are driven through our distributors. We do not sell to your customer, we refer them back to you! 

  • EQ is the only manufacturer of heads in the business offering a full 1 year parts and labor warranty on stock replacement applications. (See catalog for warranty details).