2020-2026
2014-2019
2005-2013
1997-2004
Installation Time
(approx) 6 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Comp Cams LSR Rectangular Port 239/255 Hydraulic Roller Camshaft (97-13 Corvette C5 & C6)Find parts that fit my vehicle
Item CV7090
Our Price
$541.95 each
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Product Information
Features, Description, Q&A, Specs & Installation
Features
- _x000D_
- Hydraulic Roller Delivers Broad Top End Power Range For High RPM _x000D_
- Designed For Race Only LS Engines With Aftermarket Rectangular Port Cylinder Heads And Higher Compression _x000D_
- Advertised Intake Duration 289 Degrees _x000D_
- Advertised Exhaust Duration 305 Degrees _x000D_
- Intake Duration At .050 Inch Lift 239 Degrees _x000D_
- Exhaust Duration At .050 Inch Lift 255 Degrees _x000D_
- Intake Valve Lift 0.624 Inches _x000D_
- Exhaust Valve Lift 0.624 Inches _x000D_
- Lobe Lift Intake 0.367 Inches _x000D_
- Lobe Lift Exhaust 0.367 Inches _x000D_
- Lobe Separation Angle 114 Degrees _x000D_
- Intake Centerline 110 Degrees _x000D_
- Exhaust Close After Top Dead Center 35 Degrees _x000D_
- Intake Open Before Top Dead Center 34 Degrees _x000D_
- Exhaust Open Before Bottom Dead Center 89 Degrees _x000D_
- Intake Close After Bottom Dead Center 75 Degrees _x000D_
- RPM Operating Range 2,400 To 7,200 _x000D_
- Camshaft Gear Attachment 3-Bolt _x000D_
- Lifter Type Hydraulic Roller _x000D_
- Engine Family GM LS GEN III/IV 3-Bolt 8 Cylinder 1997-2015 _x000D_
- Usage Street / Strip _x000D_
- Warranty Twelve Months _x000D_
- Fits 97-13 Corvette C5 & C6 _x000D_
Description
High-Performance Hydraulic Roller. The Comp Cams LSR Rectangular Port 239/255 Hydraulic Roller Camshaft is engineered to maximize top-end power for race-only GM LS engines equipped with aftermarket rectangular port cylinder heads and higher compression ratios. It improves engine breathing and performance at high RPM ranges, making it ideal for competitive motorsports.
_x000D__x000D_Construction and Appearance. Crafted with precision from durable materials, this camshaft features a high-quality hydraulic roller design. The cam lobes are finely machined to exacting standards with a smooth finish that ensures efficient valve movement and durability under intensive racing conditions.
_x000D__x000D_Installation. Installation requires moderate mechanical skill and is compatible with 3-bolt camshaft gear attachments, allowing for a straightforward swap into the designated GM LS engine family without the need for drilling modifications.
_x000D__x000D_Warranty. This camshaft includes a twelve-month warranty, providing assurance against manufacturing defects.
_x000D__x000D_Application. Designed specifically for GM LS GEN III/IV 3-Bolt 8 Cylinder engines, it is ideally suited for the 97-13 Corvette C5 & C6 models.
Comp Cams 54-471-11
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Hydraulic Roller Camshaft
- Camshaft Bearings
- (1) Camshaft Lube
- Instruction Manual
Tech Specs
4.7
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