GPI - LS3 Camshaft - Thump '24 - LS-Thump-24
Track-Proven Thump Cam for LS3, LS2 & LS1
The GPI Thump '24 LS3 Camshaft is widely regarded as one of the pound-for-pound best 3-bolt cams available for LS3, LS2, and LS1 combinations. It has become a benchmark choice for late-model Camaros and Corvettes across the country, delivering the kind of aggressive sound and strong power curve enthusiasts expect from a serious street/strip grind.
GPI camshaft and cylinder head packages featuring this series have been dominating racetracks, pushing customer Camaros and Corvettes deep into the 10-second zone while still remaining a solid choice for high-performance street builds. If you want proven track results with real-world drivability (depending on spec), the Thump '24 line is the go-to option.
Street Manners to All-Out N/A Race
The Thump '24 is not a one-size-fits-all cam. GPI offers four different iterations of this extremely popular profile - ranging from a milder grind that delivers a noticeable performance gain with near-stock manners, all the way to an aggressive, all-out naturally aspirated race camshaft. This lets you tailor the cam to your specific goals, whether you want street-friendly thump or maximum N/A horsepower.
NA Optimized, Centrifugal Blower Friendly
Although these camshafts were originally designed around naturally aspirated engines, they also work exceptionally well with centrifugal superchargers. Because centrifugal blowers follow a more linear, N/A-like power curve, the Thump '24 profiles carry over beautifully for boosted setups. It's an excellent choice if you are running N/A now but plan to add a centrifugal blower later.
Installation Requirements
These are high-lift, 3-bolt LS cams, and proper supporting valvetrain components are mandatory for reliability and performance. For installation, you will need:
- Dual .660" valve springs
- Hardened pushrods
- 3-bolt conversion components for engines originally using a single-bolt cam
Refer to the Cam Install Package above for the required supporting components and recommended combinations.
Features
- Pound-for-pound one of the best 3-bolt LS3/LS2/LS1 cams on the market
- Proven benchmark camshaft for Camaros and Corvettes nationwide
- GPI cam and head combos have run customers deep into the 10-second range
- Four iterations available, from mild street-friendly to all-out N/A race
- Optimized for naturally aspirated engines yet works great with centrifugal blowers
- High-lift design for strong top-end power and aggressive exhaust note
- Compatible with LS3, LS2, and LS1 platforms using 3-bolt cam hardware
Quick Specs
- Part Number: LS-Thump-24
- Engine Platforms: LS3 / LS2 / LS1
- Cam Type: High-lift, 3-bolt performance camshaft
- Design Intent: N/A performance with centrifugal blower compatibility
- Configurations: Four iterations from mild street to all-out N/A race
- Required Components: Dual .660" valve springs, hardened pushrods, 3-bolt conversion
- Recommended: Use with GPI camshaft and head packages for maximum performance
FAQs
Is this cam only for naturally aspirated builds?
No. While the Thump '24 series was designed around N/A setups, the profiles work extremely well with centrifugal superchargers thanks to the similar, linear power curve. It's a great option if you plan to add a blower later.
What do I need to install the Thump '24 cam in my LS engine?
You will need dual .660" valve springs, hardened pushrods, and a 3-bolt conversion if your engine started with a single-bolt cam. GPI's Cam Install Package above includes the required components to support this high-lift grind correctly.
Why Buy from Beefcake Racing?
Beefcake Racing specializes in late-model GM performance and can help you choose the right GPI Thump '24 cam iteration for your LS3, LS2, or LS1 build. We offer expert guidance, competitive pricing, and fast shipping on cams, valvetrain, and supporting hardware.
Call 1-855-827-7223 or email sales@beefcakeracing.com for personalized recommendations.
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