The ZL1 is back! With a new Whipple Supercharger

The ATI ZL1 Camaro is back! A big thanks to Redline Motorsports for installing their Phase 4 ZLI Gen 6 Performance Package. The dyno-tested upgrades bring the peak torque to 852.9 ft-lbs of torque and 836.6 HP – an increase of over 300 HP over stock.

The car was on display at the Hunt Valley Horsepower car show before heading up to Maple Grove for the Street Outlaws event on Labor Day weekend.

The “Phase 4” upgrade includes:

  • Whipple 2.9 liter Supercharger System
  • Redline Custom Grind Camshaft with 32% Fuel Lobe
  • Redline Dual Valve Springs with Titanium Retainers
  • Redline Chromoly Pushrods
  • Comp Rocker Arm Trunnion Kit
  • Billet DOD Delete Valley Cover
  • GM Racing Roller Lifters
  • Lifter Trays
  • ARP Head Bolts
  • MLS 7 Layer Head Gaskets
  • Cam Phaser Lockout Kit
  • Cam Bolt
  • Cam Sprocket
  • New HD Supercharger Drive Belt
  • KOOKS Stainless Steel Headers
  • 3″ Mid Section with X Pipe
  • Colder Heat Range Spark Plugs
  • Oil and Filter Change
  • Custom Engine Management Calibration and 10 speed trans
  • Chassis DYNO Report


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