LSR Cathedral Port 247/255 Hydraulic Roller Cam for GM LS GEN III/IV

HYDRAULIC ROLLER-400+ci, high rpm applications with major modifications and cathedral port cylinder heads.

In stock
Camshaft Material:
Valve Springs Required:
Assembly Lubricant Included:
Engine Family: GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
RPM Operating Range: 2,400-7,000
Grind Number: 297LRx HR14
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: LSR Cathedral Port Large Displacement
California Proposition 65: WARNING: Cancer and Reproductive Harm
Advertised Intake Duration: 297
Advertised Exhaust Duration: 305
Intake Duration at .050 Inch Lift: 247
Exhaust Duration at .050 Inch Lift: 255
Intake Valve Lift: 0.624
Exhaust Valve Lift: 0.624
Lobe Lift Intake: 0.367
Lobe Lift Exhaust: 0.367
Lobe Separation: 114
Intake Centerline: 111
Exhaust Close ATDC: 36
Intake Open BTDC: 36
Exhaust Open BBDC: 88
Intake Close ABDC: 80
Camshaft Gear Attachment: 3-Bolt
Component Part Number
Break-In Lube: 159