Description
Comp Cams 54-446-11 Xtreme Energy XE-R design for standard displacement LS2 and LS1 with Cathedral Port Cylinder Heads
XFI™ Xtreme Energy-R 232/234 Hydraulic Roller Camshaft for GM LS GEN III/IV. Xtreme Energy XE-R design for standard displacement LS1, LS2, 5.7L, 6.0L, Race Only Applications.
*Only just fits with 020" taken off the cylinder head & factory valve relief pistons. Double check as piston to valve clearance as piston reliefe maybe required.
Dual Spring Kit recommended: DRP-8415P-LSKIT
Advertised Intake Duration: 281
Advertised Exhaust Duration: 283
Intake Duration at .050 Inch Lift: 232
Exhaust Duration at .050 Inch Lift: 234
Intake Valve Lift: 0.595
Exhaust Valve Lift: 0.598
Lobe Lift Intake: 0.35
Lobe Lift Exhaust: 0.352
Lobe Separation: 112
Intake Centerline: 110
Exhaust Close ATDC: 28
Intake Open BTDC: 31
Exhaust Open BBDC: 76
Intake Close ABDC: 71
Camshaft Gear Attachment: 3-Bolt
Specifications
| SKU | 54-446-11 |
| Barcode # | 036584068662 |
| Brand | COMP CAMS |
| intake valve lift | 0.595 |
| Exhaust Valve Lift | 0.598 |
| Lifter Type | Hydraulic Roller |
| Advertised Exhaust Duration | 283 |
| Advertised Intake Duration | 281 |
| Cam Type | Hydraulic Roller |
| Exhaust Duration At .050 Inch Lift | 234 |
| Intake Duration At .050 Inch Lift | 232 |
| Lobe Separation | 112 |
| Camshaft Series | XFI XE-R |
| Grind Number | XER281HR |
| Basic Operating Rpm Range | 2,400-7,200 |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Billet Steel |
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