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

HUG 20301C




This is a pair of INDY LA-X heads with one piece stainless, oversize intake (2.02/1.620) valves.  Includes our proprietary racing valve job along with blending of the valves into the chamber which increases flow. It does not include the spring kit (springs, locks, retainers & seals). Spring kits can be ordered below. Designed to use shaft mount "LA" style rocker arms. Requires use of "LA" style intake manifold.

Features pressed-in hardened seats and bronze guide liners. All of our assembled INDY "X"  heads now have bronze guide liners to prevent the common problem of valves sticking in the guides. BEWARE of purchasing these heads from anywhere that does not install the bronze guides!
The flow chart below shows the gains on our flow bench when upgrading the 
intake valve from the stock 1.92" size to the 2.02" size along with our racing
valve job. Numbers like this are probably worth 25-35 HP depending on the 
engines configuration. 

Lift Intake 1.92" CFM Intake 2.02" CFM CFM Increase Exhaust
.100" 71 73 +2  
.200" 113 136 +23 89
.300" 167 192 +25 140
.350" 193 213 +20 155
.400" 216 231 +15 175
.450" 234 244 +10 176
.500" 246 251 +5      177








 This is a powerful cast iron replacement head for Small Block LA applications.

Photo below is of the Hughes Racing Valve Job.

 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. This head is designed for use with 8mm intake (2.02” diameter) and exhaust valves (1.620” diameter).

 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 X Cylinder Heads also come with an extra thick deck surface to enable angle milling for compression.  

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.

Related Parts:

 HUG 1110VSK-M Installed Spring Kit

HUG 1129VSK-M Installed Spring Kit

Installed Beehive Spring Kit

7183S Bolts, Head Set Iron Magnum:Stock OEM Style Hex Hd, Mag 318 & 360 Eng  

ARP 144-3604 Bolts, Head Set Iron Magnum: ARP Brand Hex Head, Magnum 318 & 360 Eng  

ARP 144-4203

FEL 9898PT

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

HS9898PT2 Gasket, Head Set Magnum V8 : '98-'03 5.2 & 5.9 Magnums Fel Pro Kit

 ARP 144-4003

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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