Installation Time
(approx) 5 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
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Comp Cams Big Mutha Thumpr 235/249 Hydraulic Roller Camshaft (99-13 V8 Sierra 1500)Find parts that fit my vehicle
Item S550842
Our Price
$541.95 each
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Big Mutha' Thumpr 235/249 Hydraulic Roller Cam
- Special Price $404.95
- Engine Family GM LS Gen III/IV 3-Bolt 8 Cylinder 1997-2015
- RPM Operating Range 2,600-6,800
- Cam Type Hydraulic Roller
- Camshaft Series Thumpr
- Camshaft Gear Attachment 3-Bolt
- Usage Street/Strip
- Advertised Intake Duration 291
- Advertised Exhaust Duration 311
- Intake Duration at .050 Inch Lift 235
- Exhaust Duration at .050 Inch Lift 249
- Intake Valve Lift 0.573
- Exhaust Valve Lift 0.558
- Lobe Lift Intake 0.338
- Lobe Lift Exhaust 0.329
- Lobe Separation 109
- Intake Centerline 103
- Valve Timing Lift 0.006
- Exhaust Close ATDC 46
- Intake Open BTDC 41
- Exhaust Open BBDC 85
- Intake Close ABDC 70
- Make GM
- Lifter Type Compatible with Hydraulic Roller
- Usage Street/Strip
Description
Hydraulic Roller Camshaft. The Comp Cams Big Mutha Thumpr 235/249 Hydraulic Roller Camshaft enhances engine performance by optimizing valve timing and lift, providing a powerful street/strip setup that improves throttle response, horsepower, and torque. It is engineered specifically for GM LS Gen III/IV 3-bolt 8-cylinder engines from 1997 to 2015, delivering reliable and high-level performance.
Construction and Appearance. Manufactured using high-quality materials, this camshaft is designed for durability and smooth operation in hydraulic roller valvetrain systems. It is precision-engineered to meet engine specifications for optimal lift and duration, and the finish is built to resist heat and wear, ensuring lasting performance.
Installation. Installation requires moderate mechanical knowledge and proper tools. This camshaft is designed for direct fitment on compatible GM LS Gen III/IV 3-bolt 8-cylinder engines with a 3-bolt camshaft gear attachment, simplifying the upgrade process.
Warranty. This product includes a 12-month warranty against manufacturing defects, providing confidence in its durability and quality.
Application. Specifically designed for GM LS Gen III/IV 3-bolt 8-cylinder engines from 1997 to 2015, the Big Mutha Thumpr camshaft fits a wide range of vehicles within this family, including but not limited to 1999-2013 V8 Sierra 1500 models.
Comp Cams 54-602-11
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) Camshaft
5.0
Customer Reviews (1)
Questions & Answers
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Will It Fit My Sierra 1500
- 4.8L V8 - 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13
- 5.3L V8 - 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13
- 6.0L V8 - 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13
- 6.2L V8 - 07, 08, 09, 10, 11, 12, 13
