When choosing a cam for an LS3-based build, the right camshaft can transform torque, horsepower, and drivability. This guide highlights five top camshaft kits and related install components designed to optimize naturally aspirated or mild boosted LS3 setups. Each option below is paired with a complete install kit to simplify upgrades on Gen III/IV engines. Use the table to compare key specs at a glance before diving into detailed product sections.
| Product | Cam Specs (approx) | LS3/LSA compatibility |
|---|---|---|
| CHOPacabra Truck Cam Install Kit | 214/222, .550″/.550″, 108 LSA | Gen III/IV 6.0/6.2 LS |
| TSP Stage 2 LS3 Cam Kit | 229/244, .629″/.615″, 3-Bolt | 6.2L LS3, LSA, L92 |
| TSP Stage 3 LS3 Cam | 231/246, .640″/.615″, 111 LSA | 6.2 LS3, LSA, L92 |
| BTR Red Hot LS Cam (Gen III/IV) | 221/24X, .619″/.617″, 113 LSA | Gen III/IV LS engines |
| BTR Norris Cam Install Kit | 212/22X, .552″/.552″, 107 LSA | 6.0/6.2 LS3 |
The following sections profile five standout options. Each entry includes the cam profile, kit contents, and practical notes to help you weigh performance gains, drivability, and compatibility with your build goals.
CHOPacabra Truck Cam Install Kit
The CHOPacabra cam from Texas Speed & Performance is designed for Gen III/IV LS-based engines, including the LS6-inspired feel with a snarling aftermarket cadence. Cam specs are around 214/222 with a .550″/.550″ lift and a 108 LSA, pairing well with factory torque converters and LS6 springs for a strong, aggressive idle and improved mid-range torque. The included Delphi LS7 lifters and guide trays support a reliable valve-train upgrade across 1999-2013 platforms. This kit targets a bold, aggressive sound without sacrificing everyday drivability for street use.
TSP Stage 2 LS3 Camshaft Kit
The Texas Speed Stage 2 kit for LS3 models focuses on midrange torque and solid top-end power, with cam specs of 229/244 and valve lift around .629″/.615″. This 3-Bolt cam is compatible with LS3, LSA, and L92 cylinder heads, and the kit includes dual valve springs, seals, titanium retainers, spring seats, pushrods, and other hardware. For street performance with strong throttle response and manageable idle, Stage 2 offers a well-rounded upgrade path for naturally aspirated builds or mild boost potential.
TSP Stage 3 LS3 Camshaft
The Stage 3 cam from Texas Speed is engineered for customers seeking higher horsepower and top-end power while maintaining driveability. With a profile of 231/246 and a .640″/.615″ lift at 111 LSA, this 3-Bolt cam is designed to unleash significant performance gains on 6.2 LS3/LSA/L92 configurations. Texas Speed emphasizes real-world dyno testing behind these designs, offering an option for enthusiasts aiming for substantial improvements at the expense of minimal friction and fuel economy trade-offs. The kit targets higher rpm performance and a strong, aggressive character.
Dynosty BTR Red Hot LS Cam
The BTR Red Hot LS3 cam from Dynosty is a popular option for Gen III/IV LS engines, with a cam profile around 221/24X and lift around .619″/.617″, plus a 113 LSA. This design from Brian Tooley Racing emphasizes a balance of strong power gains and stable idle, suitable for both N/A and boosted builds depending on supporting hardware. The package is made in the USA and reflects BTR’s heritage in creating cam profiles tuned for durability and measurable horsepower improvements across a broad range of LS3 engine variants.
BTR Norris Cam Install Kit for GM/ Chevrolet LS
The BTR Norris Cam Install Kit pairs a Norris camshaft for Gen III/IV LS engines with a comprehensive installation kit. Cam specs around 212/22X and .552″ lift, 107 LSA, combined with a complete gasket and lifter package, ensure a smoother upgrade process on 1999-2013 LS platforms. The kit includes 16 Delphi LS7 lifters and 4 lifter trays, making it a robust option for builders seeking a well-rounded, all-in-one solution for a stock-to-modest build with noticeable street performance gains.
Buying Guide: Key Considerations For LS3 Cam Upgrades
When selecting a cam for LS3-based builds, consider the following factors to align with your goals and your engine’s current setup.
- Vehicle use and driving style: Choose a cam that matches your daily driving needs—street-friendly torque and a smooth idle versus aggressive top-end power for track days.
- Compression and valve train: Higher lift and longer duration often require stronger valve springs, pushrods, and possibly upgraded lifters and pushrods. Ensure the kit includes or accommodates these components.
- Head and combo compatibility: Stage 2 and Stage 3 cams work best with compatible cylinder heads (LS3/LSA/L92) and may require tuning for optimized fuel and timing. Consider whether you have aftermarket heads or stock heads with appropriate spring compatibility.
- Driveability vs peak power: A more aggressive cam may reduce low-end torque or increase rough idle. Balance your desired power band with a cam’s profile to avoid sacrificing daily usability.
- Supporting hardware: Many kits include lifters, springs, retainers, pushrods, gaskets, and timing components. Confirm all required parts are included for a complete install and avoid costly missing pieces.
- Tuning and engine management: After installing a cam, engine calibration is essential. Plan for a professional tune to maximize performance and prevent drivability issues.
- RESTORATION and durability: If you’re restoring a stock engine, consider a cam with proven longevity and a good track record for reliability under daily-driving conditions.
- Warranty and manufacturer support: Check the cam manufacturer’s warranty terms and any support resources for troubleshooting after installation.
Choosing the right cam involves balancing your performance goals with the constraints of your engine, transmission, and fuel system. The options above provide a spectrum of performance targets, from stout midrange improvements to high-end power gains, while offering comprehensive installation kits to simplify installation and ensure reliable operation.