GPI L86 (6.2L) DI Truck High Lift Cams - STG3 (2014 GMC Sierra 1500 6.2L / Chevy Silverado) - L86HL3
Stage 3 High Lift Camshaft for Maximum 6.2L Truck Performance
The GPI L86HL3 STG3 camshaft is built for the hardcore enthusiast who wants the strongest naturally aspirated power gains available for the 6.2L L86 Direct Injected platform. This cam delivers noticeably more torque and horsepower than the STG1 and STG2 profiles, with exceptional mid-range punch and powerful top-end pull to 6600 RPM.
As a true high-lift LT cam, the STG3 requires dual .660" valve springs and a GPI phaser limiter. It is designed for trucks equipped with an upgraded torque converter and benefits greatly from freer-flowing intake and exhaust components. If you're building a performance-focused 6.2L truck that you still want to enjoy on the street, this is the go-to choice.
Built for N/A Power and Future Centrifugal Boost
The linear power characteristics of the L86HL3 make it an exceptional performer in naturally aspirated setups, while also pairing perfectly with centrifugal supercharger systems. Whether you're running N/A or planning future boost, this camshaft delivers elite performance across the board.
STG3 High Lift Cam Specs - L86HL3
- Duration (Int/Exh): 223 / 235
- Valve Lift (Int/Exh): .630 / .630
- LSA: 114
- ICL: +8
Performance Characteristics
- Stronger power and torque than STG1 and STG2
- Pulls hard to 6600 RPM
- Ideal for aggressively driven street trucks and performance builds
- Optimized for N/A or centrifugal blower setups
- Requires upgraded torque converter
- Requires GPI 0° Phaser Limiter
- Smooth and durable high-lift valvetrain dynamics
Quick Specs
- Engine: 6.2L L86 Direct Injected V8
- Duration: 223 / 235
- Lift: .630 / .630
- LSA / ICL: 114 / +8
- Converter: Upgraded converter required
- Valvetrain: Dual .660 springs required
- Limiter: GPI 0° phaser limiter required
- RPM Capability: Strong to 6600 RPM
Fitment
GMC Sierra 1500 - 6.2L L86
- 2014 GMC Sierra 1500 6.2L
Chevrolet Silverado 1500 - 6.2L L86
- 2014 Chevrolet Silverado 1500 6.2L
FAQs
Does the STG3 cam require a torque converter upgrade?
Yes. An upgraded converter is required to properly match the cam's powerband and ensure smooth low-speed drivability.
Is the STG3 suitable for boosted applications?
Yes. The STG3's linear N/A power curve makes it an excellent match for centrifugal superchargers, offering strong top-end horsepower gains.
Why Buy from Beefcake Racing?
Beefcake Racing offers expert camshaft selection support, fast shipping, and top-tier performance guidance for all GM truck platforms. Need help choosing the right L86 cam?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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