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Category : A- Small Block "LA" : Cylinder Heads, Iron : INDY "X" Heads : Performance Style

HUG 20301SP-C




Small block CNC Super prepped heads with custom designed CNC combustion chambers that deliver air flow that is very close to fully ported aluminum heads.

 This is for a PAIR of Your head castings (customer supplied INDY "X" heads) with new 2.02" one piece stainless intake valves and Hughes CNC Super Prep work. Includes our proprietary racing valve job along with blending of the valves into the chamber which increases flow.

What's Included:
      Disassembly & cleaning of your heads.
      One piece stainless valves- 2.02” intake valves  5/16” stems (+.100 longer vlave stems for increased valve spring height)
      Hughes Engines proprietary racing valve job
      Blending of valves into the chamber to increase airflow
      Hughes Engines CNC Super Prep combustion chamber work
Small combustion chambers. 64 or 67cc for higher compression without having to switch pistons in LA engines
      Bronze valve guides for longer life 
      New Viton Valve stem seals

What’s NOT included: (all available at an extra charge. Call for details)   
Milling the heads   

                Pushrod Tunnel clearancing   (available at an extra charge)
            Exhaust Valve
            Springs, locks, retainers & seals

         Pressed in hardened exhaust seats to insure no cracks.
Multi-angle intake valve seats
         Modern port design to enhance air flow.  

         179cc intake and 67cc exhaust runners
Highly efficient water jacket to prevent engine hot spots
Extra thick deck surface to enable angle milling for compression

What you need to know:
Adjustable rocker arms must be used with cams having greater than stock lift. We recommend our premium adjustable rocker arm assemblies along with matching pushrods.
    If you need a combination not shown here please call one of our technicians at 309-745-9558

The photo below is of a CNC Super Prepped chamber with a racing valve job.

The photo below shows our deep port match work.

 This LA-X head uses the standard "LA" intake manifold and  shaft style rocker system. It is drilled for the proper valve cover and gasket and contains both Chrysler LA and Magnum accessory holes on both ends of the head. 

 A cast iron replacement, the Indy 360 LA-X Head series is designed for both Small Block LA  applications (318-360-415cid). With a host of additions and improvements over the factory originals, these heads are an easy way to get 400 to 550 horsepower out of your Mopar-powered street machine. Features of these impressive heads include 179cc intake and 67cc exhaust runners, a 62cc combustion chamber, multi-angle intake and hardened radiused exhaust valve seats, an improved valve guide design and a highly efficient water jacket to prevent engine hot spots. The 360 LA-X Cylinder Heads also come with an extra thick deck surface to enable angle milling for compression.  

To view the flow chart for this head click the button below.

NOTE: To use these heads on a magnum block, the block must have the L.A. shaft oil passages. These are located between the #1 and #3 cylinders and between the #2 & #4 cylinders.


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ARP 144-4203

FEL 9898PT

FEL 1008 Fel Pro Racing Gasket .039" x 4.180"

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HUG 15023      1.5:1 Rocker Arm Kit w/Shafts             

HUG 15063      1.6:1 Rocker Arm Kit w/Shafts               

7440               Small Block Rocker Hold Down Stud Kit          


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