Advanced Induction Cylinder Head Development
Ai System Matched GM LSx Heads & Cam Kits

     Over the years we've noted that the vast majority of guys are looking for the same thing - a reliable hot rod ideally suited for the street, capable at the track, and striking an ideal compromise between longevity and power gains.  The following setups are ideal for use on stock short block cars running 91 octane or better pump fuel, and drive well with stock gearing.  All of the following kits include in house QC inspection of every camshaft to ensure your individual cam will simply install "straight up." Adjustable aftermarket timing sets, piston relief cutting, and cam degreeing/adjustment is NOT required for adequate piston to valve clearance.  With proper tuning these setups typically manage 22-30 MPG highway fuel economy.

Power Gains: The horsepower output ranges assume a set of aftermarket headers, and estimate a realistic range that can be expected from moderate inlet & exhaust restriction to minimally restricted "full bolt-on" cars.  Thanks for your consideration!




GM LS1 346cid/5.7L

GM LS1 346cid/5.7L Heads & Cam Kit:
  • Ai 219cc Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 9.8:1 & up, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 5/16" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 420-450rwhp SAE corrected

    Cost: $1795 + Shipping

GM LS1 346cid/5.7L High Compression Heads & Cam Kit:
  • Ai 219cc HCR Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 10.4-12:1, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 5/16" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 440-460rwhp SAE corrected

    Cost: $1945 + Shipping

GM LS1 346cid/5.7L Heads & Cam Kit for GM 243/799 LS6/LS2 Head Castings:
  • Ai 226cc Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 9.9-11.5:1, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 5/16" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 440-460rwhp SAE corrected

    Cost: $1795 + Shipping

GM LS2 364cid/6.0L

GM LS2 364cid/6.0L Heads & Cam Kit:
  • Ai 226cc Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 10.3-11.5:1, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 5/16" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 450-480rwhp SAE corrected

    Cost: $1795 + Shipping

GM LS3 376cid/6.2L

GM LS3 376cid/6.2L Heads & Cam Kit:
  • Ai 275cc Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 10.3-11.8:1, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 5/16" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 470-500rwhp SAE corrected

    Cost: $1795 + Shipping

GM LS7 427cid/7.0L

GM LS7 427cid/7.0L Heads & Cam Kit:
  • Ai 280cc Full CNC Porting
  • PSI 1511 MaxLife Endurance Springs
  • New GM OEM Valve Seals
  • Any Compression Ratio from 10.9-12.5:1, or Ai optimized for cam selection
  • Any HR Camshaft - Ai Custom Grind, or you may specify a grind yourself
  • Ai One Piece 4130 ChromeMoly Hardened Pushrods 3/8" & .080" Wall Thickness
  • GM OEM .051" Head Gaskets
  • In-house QC inspection of your individual camshaft

  • Typically manages 580-610rwhp SAE corrected

    Cost: $1995 + Shipping


Common Cam Options for Heads & Cam Kits:



  • Ai 214 / 224 - .600" / .583" - 117 LSA
    • Very mild idle w/ stock drivability.  Typically makes peak power in the low 6XXXrpm range.

  • Ai 224 / 230 - .610" / .605" - 114 LSA
    • A great daily driver cam.  This grind has a noticeable lope at idle, retains excellent manners, and makes power into the mid 6XXXrpm range.  Most often run in LS1/346's and LS3's.

  • Ai 226 / 234 - .600" / .600" - 113 LSA
    • Our most popular cam for stock short block LS1's.  Noticeable lope, great drivability, and very mild lobe designs for long spring life.

  • Ai 228 / 236 - .626" / .626" - 114 LSA
    • Ideal for max effort HR applications that need a wide power band & do not want to run a large camshaft.

  • Ai 230 / 238 - .605" / .605" - 114 LSA
    • An excellent daily driver cam for stock short block LS2's.  Lopes at idle, and makes peak power in the mid 6XXXrpm range.

  • Ai 234 / 238 - .626" / .626" - 114 LSA
    • Can drive very well with competent tuning.  Lopey idle, excellent in the 4000-7000rpm range.

  • Ai 238 / 242 - .626" / .626" - 115 LSA
    • Largest cam typically run in stock displacement street cars.  Lopey idle, excellent in the 4000-7000rpm range.

    Kit Options


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