BTR Gen III & IV LS Truck Norris Cam
Specs: 212/22X, .553"/.553", 107° LSA
The Truck Norris will deliver a roundhouse kick in the pants to your 1999-2013 Silverado or Sierra. Developed from hundreds of hours of in house cam lobe design and dyno testing, this camshaft has more power and torque everywhere in the curve compared to our legendary V2 truck cams.
Specifications
BTR SKU: BTR-TRUCKNORRIS
Camshaft Description: BTR Gen III & IV Truck Norris Camshaft
Engine Family: Gen III & IV LS Applications
Recommended Engine Size: 4.8 – 6.2 L
Recommended Valve Springs: BTR-SK018 (required)
Recommended Lifters & Trays: (LS7 Lifters) X12499225 | (Trays) BTR95365-4
Suggested Pushrod Length: 7.400”
Camshaft Data
| Specification | Value |
|---|---|
| Intake Duration @ .050" | 212° |
| Exhaust Duration @ .050" | 22X° |
| Lift (Intake / Exhaust) | .553" / .553" |
| Lobe Separation Angle | 107° |
| RPM Operating Range | 1800 – 6600 |
| Idle Quality | Aggressive with the signature Truck Norris lope |
| Chop Scale | 7 / 10 |
| Torque Converter Compatibility | Works with stock converter but benefits from a mild stall |
| Drivability | Excellent balance of drivability and performance – strong torque everywhere |
Performance Highlights
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Signature Truck Norris idle – aggressive yet streetable
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Broad torque curve for real-world truck performance
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Proven gains across the entire powerband vs. BTR V2 cams
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Ideal for enthusiasts seeking sound and performance without compromise

