MACE ALUMINIUM HEADS TO SUIT HOLDEN CREWMAN VY ECOTEC L36 3.8L V6

Product no.: HDS602-E

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$5,750.00

 

 

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As regular crack-free cast iron heads are gradually becoming unobtainable, engine builders and DIY-enthusiasts are running out of options on where to source a clean set of heads. Therefore, we have made available a superior pair of aftermarket alloy heads. Fit for all applications, these CNC machined light-weight aluminium cylinder heads are the ultimate upgrade for your factory Ecotec or V6. Not only do these new heads address every shortcoming of the factory cast iron heads, they are one of the single largest mods you can do to improve the performance of your vehicle.

 

Key Features: 

  • A 16 kilogram weight reduction (per pair) leading to improved vehicle weight distribution, acceleration, handling, fuel economy and braking performance.
  • More efficient engine cooling. 
  • Increased air flow provides large HP gains in every application and better engine efficiency for improved economy.
  • Aluminium allows higher boost and/or more compression with the same octane fuel.
  • 56cc combustion chambers increase the compression ratio by 0.6 as compared to the stock 62cc chambers.
  • 148cc intake runners and 58cc exhaust ports.
  • Reinforcements to prevent flexing under high boost applications.
  • Extra material for custom port work.
  • Sturdy rocker stands which remove potential rocker arm movement under high loads.
  • Custom designed to allow the addition of extra head bolts around each cylinder.
  • Larger 1.96” intake and 1.57” exhaust valves compared to stock is (1.80" and 1.52" respectively).
  • Precision surface finish of 40 RA ensures perfect sealing with any head gaskets.
  • Complete heads - Assembled and ready to bolt on. (Complete with 130lb valve springs, valves, hardened seats, guides, valve stem seals, retainers and locks.)

 

Flow Bench Figures:

These are rough figures with no exhaust manifold assembled (straight out of the box). Additional porting will see flow numbers approach 300CFM.

 

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Vehicle Fitment Guide

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Note: These cylinder heads are made to order and will take up to two weeks to process, prior to delivery.

Browse these categories as well: Cylinder Heads, Crewman, VY