Advanced Induction Cylinder Head Development
Ai System Matched GM LT1 Cam Kits

Our cam kits include a group of components designed to swap directly onto the OEM GM LT1 heads and provide the capability to handle a majority of .600" net lift & under HR lobes.  With the PSI 1511 MaxLife Endurance Spring as a standard component, you'll have the best spring life that can be attained with after market HR setups.  These kits can also be applied to modified GM LT1's or other cylinder heads that utilize the standard 11/32" valve stem diameter.  Our titanium retainer & light weight lock upgrade should be considered in applications where heavier than stock valves are used.  Common cam grinds for this kit applied to GM LT1's are listed below.

Ai Complete HR Cam Kit:
  • Ai Billet Steel LTx Camshaft
  • Performance Springs Inc. MaxLife Beehive Springs
  • CompCams Beehive Spring Steel Retainers
  • Machined & Hardened Steel Locks / Keepers
  • CompCams Hardened Steel Spring Locators
  • OEM Quality Steel Jacketed Viton Seals
  • K-Line Valve Seal Installation Driver
  • ARP 7/16" Pro Series Rocker Studs
  • CompCams 7702 Pushrod Length Checking Tool
  • CompCams 1605 Ultra Pro-Mag Rocker Arms - 1.6 Ratio
  • Ai Hardened & Black Oxided Steel Guide Plates
  • Ai 4130 One Piece Chrome Moly Hardened Pushrods 5/16" x 7.XX" .080" Wall
  • Fel-Pro Gasket Kit - Timing Cover gasket, Water Pump gaskets, and Crank/Opti/Pump drive seals
  • Fel-Pro 1284 Intake Manifold Gaskets w/RTV


  • Cost: $1295

Ai Basic HR Cam Kit:
  • Ai Billet Steel LTx Camshaft
  • Performance Springs Inc. MaxLife Beehive Springs
  • CompCams Beehive Spring Steel Retainers
  • Machined & Hardened Steel Locks / Keepers
  • CompCams Hardened Steel Spring Locators
  • OEM Quality Steel Jacketed Viton Seals


  • Cost: $745


Component Options:

Manley 23626 Titanium Retainer & 13091 Lock Upgrade (48% less mass than Comp steel setup) - Cost: +$250



Grinds for Ai Cam Kit on OEM GM LT1 Heads

Below is a list of grinds designed to work when our cam kit is applied to OEM GM LT1 heads.  Most can be had on lobe separations from 106-116° if you would like to pick something out for yourself (for instance you could request a 234° / 234° .576" / .576" on a 115° LSA for a turbo application).  All lift specs are based on 1.6:1 ratio rockers.

  • Ai 214 / 220 - .517" / .517"

  • Ai 220 / 226 - .560" / .560"

  • Ai 220 / 230 - .560" / .555"

  • Ai 226 / 230 - .560" / .555"

  • Ai 226 / 234 - .566" / .566"

  • Ai 230 / 238 - .566" / .566"

  • Ai 234 / 242 - .576" / .580"

  • Ai 236 / 242 - .580" / .580"

  • Ai 242 / 248 - .580" / .576"

  • Ai 248 / 252 - .588" / .576"


  • General Recommendations:

  • Ai 214 / 220 - .517" / .517" - 112 LSA
    • A good choice for those who want no drivability sacrifice.  Properly tuned this small grind will run and drive well with stock gearing & converter.  Can be run on a 114-116° lobe separation for an idle that sounds stock.  Easily passes emissions everywhere it has been tested.

  • Ai 220 / 230 - .560" / .555" - 112 LSA
    • Our version of a GM LT4 Hot Cam, but with the potential to make another few hp over the old GM grind.  Typically makes peak power at 5800-6000rpm in stock LT1 long blocks.  Properly tuned this small grind will run and drive well with stock gearing & converter.

  • Ai 226 / 234 - .566" / .566" - 110 LSA
    • Easily our most popular daily drivable grind for 350cid applications.  Typically makes peak power at 6000-6200rpm in stock LT1 long blocks.  Properly tuned it will run and drive well in M6 cars w/ stock gearing.  A4 cars should run a 3.42+ rear end gear & 2400 rpm converter minimum.  Can pass emissions in some states on 110° LSA, though 112-114° LSA makes it more likely to pass.

  • Ai 230 / 238 - .566" / .566" - 110 LSA
    • An excellent choice for 3.73-4.10 geared M6 cars.  Typically makes peak power at 6200-6400rpm in stock LT1 long blocks.  A4 cars need 3.73 gearing & a minimum 3400 rpm converter.

  • Ai 234 / 242 - .576" / .580" - 110 LSA
    • Largest recommended grind for stock short blocks; works great in 383's.  Typically makes peak power at 6500-6700rpm in 350-355cid applications.  Will still drive well if properly tuned - M6 cars need 3.73-4.10 gearing, and A4 cars need a minimum 3400 rpm converter & 3.73-4.10 gearing.