XFI™ Xtreme Truck HYDRAULIC ROLLER: 5.3L/6.0L Chevrolet/GMC Truck. Significant gains in mid & upper rpm range. Exhaust upgrade needed for best performance. Needs programmer
Camshaft Specification Table
| Part Number |
54-451-11 |
| Engine |
1997-Present General Motors 4.8ltr-6ltr Gen III/LS1/LS2/LS6, 8cyl. |
| Grind Number |
G3 XFI 261 HR 15 |
| Description |
|
|
| |
Intake |
Exhaust |
| Valve Adjustment |
0 |
0 |
| Gross Valve Lift |
0.554 |
0.558 |
| Duration At 0.006 Tappet Lift |
261 |
265 |
|
| Valve Timing At 0.05 |
|
|
| |
Open |
Close |
| Intake |
-7 |
35 |
| Exhaust |
45 |
-13 |
|
| These Specs Are For The Cam Installed At 111 Intake CL |
| |
Intake |
Exhaust |
| Duration At 0.05 |
208 |
212 |
| Lobe Lift |
0.326 |
0.328 |
| Lobe Separation |
115 |
|
| Recommended Valve Springs |
26915-16 |
|
|