LSR Cathedral Port 223/231 Hydraulic Roller Cam for GM LS GEN III/IV

HYDRAULIC ROLLER-Steady power throughout broad range. Needs aftermarket airflow improvements on inlet and exhaust.

Grind Number: 273Lr HR12
Engine Family: GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
RPM Operating Range: 1,700-6,800
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: LSR Cathedral Port Small Displacement/Max Torque
Camshaft Gear Attachment: 3-Bolt
Valve Springs Required: Yes
Camshaft Material: Billet Steel
California Proposition 65: WARNING: Cancer and Reproductive Harm
Advertised Intake Duration: 273
Advertised Exhaust Duration: 281
Intake Duration at .050 Inch Lift: 223
Exhaust Duration at .050 Inch Lift: 231
Intake Valve Lift: 0.61
Exhaust Valve Lift: 0.617
Lobe Separation: 112
Assembly Lubricant Included: No
Intake Centerline: 107
Lobe Lift Intake: 0.359
Lobe Lift Exhaust: 0.363
Valve Timing @ 0.006 Lift:
Exhaust Close ATDC: 24
Exhaust Open BBDC: 76
Intake Open BTDC: 28
Intake Close ABDC: 64
Component Part Number
Break-In Lube: 159
Lifter Kit: 850-16  /   875-16