LSR Cathedral Port 231/239 LSA 113 Hydraulic Roller Camshaft for GM LS1 LS2 GEN III/IV 5.7L 6.0L

Comp Cams, 54-459-11,  LS1 Camshaft upgrade for Cathedral Port Cylinder Heads. Perfect for LS2 Camshaft swap with Cathedral Heads. 

RPM Operating Range:   2,000-7,000

Very wide power range and excellent mid-range torque for LS engines with cathedral port cylinder heads.

Piston to Valve Clearance*: Will clear stock pistons on a LS2/6.0L. May not fit into a LS1 with stock pistons. 

*Must be checked when fitting and the responsibility of the installer. 

Engine Family:  GM LS1 and LS2  GEN III/IV 3-Bolt 8 Cylinder (1997-2015)

RPM Operating Range:   2,000-7,000

Grind Number:   281LR HR-13

Cam Type:   Hydraulic Roller

Lifter Style:   Hydraulic Roller

Camshaft Series:   LSR Cathedral Port All Out Power

Advertised Intake Duration:  281

Advertised Exhaust Duration:   289

Intake Duration at .050 Inch Lift:  231

Exhaust Duration at .050 Inch Lift:  239

Intake Valve Lift:   0.617

Exhaust Valve Lift:   0.624

Lobe Lift Intake:   0.363

Lobe Lift Exhaust:   0.367

Lobe Separation:   113

Intake Centerline:  109

Exhaust Close ATDC:  28

Intake Open BTDC:   30

Exhaust Open BBDC:   81

Intake Close ABDC:   70

Camshaft Gear Attachment:   3-Bolt

Comp Cams Australia.