Brian Tooley Racing BTR Truck Norris Camshaft Install Rebuild Kit with GM 12499225 Performance Lifters, Bolts, Gaskets, for Chevy LS 6.2 6.0 L92 L9H L94 LY6 L96 LFA - +44HP +8TQ - MADE IN THE USA

Brian Tooley Racing BTR Truck Norris Camshaft Install Rebuild Kit with GM 12499225 Performance Lifters, Bolts, Gaskets, for Chevy LS 6.2 6.0 L92 L9H L94 LY6 L96 LFA - +44HP +8TQ - MADE IN THE USA

• This is a premium kit that is MADE IN THE USA. Every component in this kit is proudly manufactured in the USA, ensuring the highest quality and reliability on the market. Unlike cheaper import kits that risk premature failure, this kit delivers lasting performance while supporting American manufacturing and helping bring jobs back to America.
• The Truck Norris will deliver a roundhouse kick in the pants to your 1999-2013 GM V8 Truck or SUV! Developed from hundreds of hours of in-house cam lobe design and dyno testing, this camshaft has more power and torque everywhere in the curve compared to BTR's legendary V2 truck cams. It has an idle sound similar to more aggressive truck camshafts, yet will behave well with stock torque converters.
• CAM SPECS SUMMARY: .552/.552" gross lift, 212/22x duration on a 107° LSA — high net lift and conservative duration placement move power into the low/mid band while preserving usable top end (1800–6600 RPM).
• POWER SPECS: Dyno‑verified ~+44 HP / +8 lb‑ft on a 6.2L ; peak gains felt through 1800–4800 RPM for towing/pass‑power with strong top‑end support to 6600 RPM—actual results depend on heads, intake, exhaust, and a proper tune.
• POWER RANGE: Usable power band from ~1800–6600 RPM with the strongest torque lift in the 1800–4800 RPM window for effortless roll‑on acceleration and towing, while maintaining pull to the 6600 RPM limit.
• DRIVE CHARACTER: Instant low‑end shove with thick midrange punch, smooth ramp into the top end to 6600 RPM, deep rumble at idle, and confident, truck‑friendly passing power without harsh NVH.
• GM/ACD PERFORMANCE 12499225 LIFTERS - Includes GM Performance lifters (12499225) — direct‑fit, high‑RPM rated lifters matched to the cam profile for correct contact patterns, smoother break‑in, reduced wear, and reliable valvetrain performance under increased load.
• HEAD GASKETS & HEAD BOLTS: Full upper gasket set with MLS head gaskets for superior sealing under increased cylinder pressures, plus two sets of USA‑made Elgin or Fel‑Pro head bolts to maintain consistent head clamp load and long‑term reliability.
• WHY BUY THIS KIT: Turnkey truck upgrade—BTR Truck Norris cam with matched GM 12499225 lifters, MLS upper gaskets, and USA Elgin/Fel‑Pro head bolts—delivers dyno‑proven torque gains, reliable sealing, and a fast, correct install so you spend less time sourcing parts and more time driving.
• LIFETIME WARRANTY IF INSTALLED BY A CERTIFIED MACHINIST