
OE
OE
GM Genuine Parts LS9 Stock Camshaft
GM Part #12638427
ACDelco Part #12638427
About this product
GM Genuine Parts Engine Camshafts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Computer Controlled CompatibleYes
Basic Operating RPM Range6500r/min
Advertised Intake Duration211°
Intake Valve Lash0 in / 0 mm
Exhaust Valve Lash0 in / 0 mm
Intake Duration at .050 Inch Lift211°
Advertised Exhaust Duration230°
Exhaust Duration at .050 inch Lift230°
ClassificationOE
Exhaust Valve Lift0.328 in / 8.337 mm
Intake Valve Lift0.331 in / 8.396 mm
Intake Valve Lift with Factory Rocker Arm Ratio0.562 in / 14.275 mm
Exhaust Valve Lift with Factory Rocker Arm Ratio0.562 in / 14.275 mm
Cam TypeHydraulic Roller
Lobe Separation122.5°
Computer Controlled CompatibleYes
Advertised Intake Duration211°
Exhaust Valve Lash0 in / 0 mm
Advertised Exhaust Duration230°
ClassificationOE
Intake Valve Lift0.331 in / 8.396 mm
Exhaust Valve Lift with Factory Rocker Arm Ratio0.562 in / 14.275 mm
Lobe Separation122.5°
Basic Operating RPM Range6500r/min
Intake Valve Lash0 in / 0 mm
Intake Duration at .050 Inch Lift211°
Exhaust Duration at .050 inch Lift230°
Exhaust Valve Lift0.328 in / 8.337 mm
Intake Valve Lift with Factory Rocker Arm Ratio0.562 in / 14.275 mm
Cam TypeHydraulic Roller
24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)
Please visit our warranty page on Gmparts.com for full warranty details.


