Like an ice cream parlour with only one flavour, Summit Racing reckoned that having just one Pro LS Turbo camshaft just wasn’t right. So, their Pro LS people came up with three more cam grinds to cover engine builds from mild to wild.

These hydraulic roller camshafts are precision-machined from high-quality, American-made steel. Their state-of-the-art lobe designs pull strongly past 7000rpm using valve springs rated as little as 150lbs at the seat and 400lbs of open spring pressure. The cams work well with stock rockers and budget-friendly valve spring and retainer kits.

Summit Pro LS Turbo cams have the same intake lobes and cam timing as the Pro LS naturally aspirated cams, but the exhaust closing point is changed to reduce overlap. The cams allow for quick turbo spool-up and are great for single T4 hotside applications running a full performance exhaust.

Find the Pro LS Turbo camshaft stage that best fits your needs:

Stage One

This cam has a 2800 to 6000rpm operating range and works great as a sleeper/stealth cam.

  • Duration @.050: 222° intake/233° exhaust
  • Lift with Factory Rocker Arm Ratio: .600” intake/.575” exhaust
  • Lobe Separation: 115°

Stage Two

This cam has a 2800 to 7000rpm operating range. It pulls hard in the mid-range with great top-end power. It’s recommended for use with LS6 valve springs and a 2800 RPM stall torque converter.

  • Duration @.050: 226° intake/230° exhaust
  • Lift with Factory Rocker Arm Ratio: .600” intake/.575” exhaust
  • Lobe Separation: 113°

Stage Three

This cam has a 3000 to 7000rpm operating range and a serious lobe. It makes great mid-range and top-end power. A 2800rpm stall torque converter is recommended.

  • Duration @.050: 231° intake/234° exhaust
  • Lift with Factory Rocker Arm Ratio: .600” intake/.575” exhaust
  • Lobe Separation: 115°

Stage Four

This cam has a 3500 to 7200rpm operating range. It’s for max-effort single turbo cars and has a very aggressive idle. A 3500rpm stall converter is recommended.

  • Duration @.050: 237° intake/234° exhaust
  • Lift with Factory Rocker Arm Ratio: .625” intake/.600” exhaust
  • Lobe Separation: 117°

Just a note. The Pro LS Turbo camshafts are compatible with computer-controlled engine management, but are not emissions-legal and will not work with engines that have Active Fuel Management or Variable Valve Timing. Engine tuning is required.

You can learn more about Summit Racing’s entire Pro LS Camshaft line at its OnAllCylinders blog.

SEE SUMMIT RACING’S PRO LS TURBO CAMSHAFTS ENDS.