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Technical Articles for Part Number CCA-54-451-11
COMP Cams XFI Xtreme Truck Camshafts
Camshaft, Hydraulic Roller Tappet, Advertised Duration 261/265, Lift .554/.558, Chevy, Small Block, LS
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Estimated Ship Date: Oct 23, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
54-451-11
Part Type:
Product Line:
Summit Racing Part Number:
CCA-54-451-11
UPC:
036584121299
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Truck
Basic Operating RPM Range:
1,000-5,700
Intake Duration at 050 inch Lift:
208
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
208 int./212 exh.
Advertised Intake Duration:
261
Advertised Exhaust Duration:
265
Advertised Duration:
261 int./265 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.554 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.558 in.
Valve Lift with Factory Rocker Arm Ratio:
0.554 int./0.558 exh.
Lobe Separation (degrees):
115
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
Yes
Grind Number:
G3XFI261HR15
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Requires custom computer tuning. Cannot use stock springs. Exhaust upgrade is recommended.
COMP Cams XFI Xtreme Truck Camshafts
Release the incredible horsepower and torque hidden inside your vehicle's engine with COMP Cams XFI Xtreme truck camshafts. Available in three different profiles (XFI 260, 261, and 266), they utilize advanced camshaft technology used in fuel injected engines to deliver improved throttle response and better mid and upper rpm power. COMP Cams XFI truck camshafts (for the GM Gen III engines) are compatible with the factory computer systems and wiring, but deliver the best performance when used with upgraded COMP Cams valvetrain equipment, including valve springs, retainers, and locks. Computer tuning is required; use a Fast Flash Cam Tuner Programmer for best results.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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