GPI L86 (6.2L) DI Truck High Lift Cams - STG4 (2014 GMC Sierra 1500 6.2L / Chevy Silverado) - L86HL4
Maximum-Power High Lift Camshaft for 6.2L DI Trucks
The GPI L86HL4 STG4 is the most aggressive high-lift camshaft available for the 6.2L L86 Direct Injected platform. Built for all-out performance, this cam delivers massive top-end power, strong mid-range acceleration, and the unmistakable character of a full-performance LT cam upgrade. If you're looking for the strongest naturally aspirated or centrifugal-supercharged cam option for your 6.2L truck, STG4 is the top choice.
As a high-lift cam, it requires dual .660" valve springs and a GPI phaser limiter. It also requires flycutting for proper piston-to-valve clearance. Designed around a 4000+ RPM stall converter, the STG4 pulls hard all the way to 6800 RPM and supports aggressive street/strip or race-oriented builds.
Perfect for N/A and Centrifugal Supercharger Builds
Although originally designed for naturally aspirated applications, this camshaft pairs extremely well with centrifugal blowers thanks to its linear high-RPM efficiency. If you're N/A today but planning for boost later, the STG4 offers seamless compatibility and outstanding performance in both setups.
STG4 High Lift Cam Specs - L86HL4
- Duration (Int/Exh): 226 / 246
- Valve Lift (Int/Exh): .630 / .630
- LSA: 113
- ICL: +8
Performance Characteristics
- Strongest high-lift cam available for the L86 platform
- Very strong to 6800 RPM
- Requires 4000+ stall converter
- Requires flycutting due to aggressive lift and duration
- Ideal for maximum-effort N/A and centrifugal supercharger builds
- High-lift profile with durable, quiet valvetrain operation
- Designed for use with GPI 4° phaser limiter
Quick Specs
- Engine: 6.2L L86 Direct Injected V8
- Duration: 226 / 246
- Lift: .630 / .630
- LSA / ICL: 113 / +8
- Converter: 4000+ stall required
- Valvetrain: Dual .660 springs required
- Limiter: GPI 4° phaser limiter required
- Clearance: Flycutting required
- RPM Capability: Strong to 6800 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 STG4 cam require flycutting?
Yes. Due to the aggressive lift and duration, flycutting is mandatory for safe piston-to-valve clearance.
Is the STG4 suitable for a daily-driven truck?
It can be street-driven with the correct converter and tuning, but it is designed for maximum performance and is best suited for aggressive street/strip or race setups.
Why Buy from Beefcake Racing?
Beefcake Racing offers expert camshaft guidance, fast shipping, and proven performance support for all GM LT truck platforms. Need help choosing the right L86 camshaft?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
