GPI L83 / L84 (5.3L) DI Truck Low Lift Cams - STG4 (2014+ GM Truck) - L83LL4
Maximum-Power Low Lift Camshaft for 5.3L DI Trucks
The GPI L83LL4 STG4 is the strongest, most aggressive camshaft offered for the 5.3L Direct Injected truck platform. Designed for all-out performance, this profile delivers exceptional top-end horsepower while remaining street-capable with the right converter and supporting mods. If you want the absolute maximum output from your naturally aspirated or boosted 5.3L L83/L84, the STG4 is the top choice.
This is a high-energy low lift cam that demands proper valvetrain preparation. Flycutting is required, and a 4000+ stall converter is mandatory for proper drivability and performance. The cam is specifically engineered to utilize the GPI 4° Phaser Limiter and maintains stability deep into the 6800 RPM range.
Technical Notes
- Low lift LT truck camshaft engineered for L83 / L84 5.3L DI applications.
- Requires Stock LT1 valve springs, hardened pushrods, and a GPI 4° Phaser Limiter.
- Flycutting required; L83 piston design offers less clearance than LT1/L86.
- 4000+ RPM stall converter required for proper performance.
- Very strong to 6800 RPM when paired with correct supporting mods.
GPI 5.3 Direct Injected Truck Cam Series
GPI's 5.3L DI camshafts have earned their reputation as the best-performing 5.3L DI truck cams on the market. The STG4 is the top of the series - an all-out max power cam designed for aggressive builds that demand serious RPM capability.
While created for naturally aspirated applications, the cam profiles also pair extremely well with centrifugal superchargers thanks to their efficient, linear power characteristics.
STG4 Cam Specs - L83LL4
- Duration (Int/Exh): 22x / 23x
- Valve Lift (Int/Exh): .54x / .54x
- LSA: 114
- ICL: +8
- RPM Capability: Very strong to 6800 RPM
- Converter: 4000+ stall required
- Limiter: GPI 4° Phaser Limiter
- Piston Clearance: Flycutting required
Performance Highlights
- Highest-output cam in the L83/L84 GPI lineup
- Broad, aggressive power curve with strong top-end charge
- Perfect for maximum-effort NA or boosted builds
- Stable and capable deep into high RPM ranges
- Designed around 5.3L piston and DI engine constraints
- Street-capable with proper converter and tuning
Quick Specs
- Part Number: L83LL4
- Engine: 5.3L L83 / L84 Direct Injected
- Duration: 22x / 23x
- Lift: .54x / .54x
- LSA / ICL: 114 / +8
- Max RPM: Approx. 6800 RPM
- Converter: 4000+ stall
- Limiter: GPI 4° Phaser Limiter
- Flycutting: Required
Fitment
Chevrolet Silverado 1500 - 5.3L L83 / L84
- 2014 Chevrolet Silverado 1500 5.3L
- 2015 Chevrolet Silverado 1500 5.3L
- 2016 Chevrolet Silverado 1500 5.3L
- 2017 Chevrolet Silverado 1500 5.3L
- 2018 Chevrolet Silverado 1500 5.3L
- 2019 Chevrolet Silverado 1500 5.3L
- 2020 Chevrolet Silverado 1500 5.3L
- 2021 Chevrolet Silverado 1500 5.3L
- 2022 Chevrolet Silverado 1500 5.3L
- 2023 Chevrolet Silverado 1500 5.3L
- 2024 Chevrolet Silverado 1500 5.3L
GMC Sierra 1500 - 5.3L L83 / L84
- 2014 GMC Sierra 1500 5.3L
- 2015 GMC Sierra 1500 5.3L
- 2016 GMC Sierra 1500 5.3L
- 2017 GMC Sierra 1500 5.3L
- 2018 GMC Sierra 1500 5.3L
- 2019 GMC Sierra 1500 5.3L
- 2020 GMC Sierra 1500 5.3L
- 2021 GMC Sierra 1500 5.3L
- 2022 GMC Sierra 1500 5.3L
- 2023 GMC Sierra 1500 5.3L
- 2024 GMC Sierra 1500 5.3L
Chevrolet Tahoe - 5.3L L83 / L84
- 2015 Chevrolet Tahoe 5.3L
- 2016 Chevrolet Tahoe 5.3L
- 2017 Chevrolet Tahoe 5.3L
- 2018 Chevrolet Tahoe 5.3L
- 2019 Chevrolet Tahoe 5.3L
- 2020 Chevrolet Tahoe 5.3L
- 2021 Chevrolet Tahoe 5.3L
- 2022 Chevrolet Tahoe 5.3L
- 2023 Chevrolet Tahoe 5.3L
- 2024 Chevrolet Tahoe 5.3L
Chevrolet Suburban - 5.3L L83 / L84
- 2015 Chevrolet Suburban 5.3L
- 2016 Chevrolet Suburban 5.3L
- 2017 Chevrolet Suburban 5.3L
- 2018 Chevrolet Suburban 5.3L
- 2019 Chevrolet Suburban 5.3L
- 2020 Chevrolet Suburban 5.3L
- 2021 Chevrolet Suburban 5.3L
- 2022 Chevrolet Suburban 5.3L
- 2023 Chevrolet Suburban 5.3L
- 2024 Chevrolet Suburban 5.3L
GMC Yukon - 5.3L L83 / L84
- 2015 GMC Yukon 5.3L
- 2016 GMC Yukon 5.3L
- 2017 GMC Yukon 5.3L
- 2018 GMC Yukon 5.3L
- 2019 GMC Yukon 5.3L
- 2020 GMC Yukon 5.3L
- 2021 GMC Yukon 5.3L
- 2022 GMC Yukon 5.3L
- 2023 GMC Yukon 5.3L
- 2024 GMC Yukon 5.3L
GMC Yukon XL - 5.3L L83 / L84
- 2015 GMC Yukon XL 5.3L
- 2016 GMC Yukon XL 5.3L
- 2017 GMC Yukon XL 5.3L
- 2018 GMC Yukon XL 5.3L
- 2019 GMC Yukon XL 5.3L
- 2020 GMC Yukon XL 5.3L
- 2021 GMC Yukon XL 5.3L
- 2022 GMC Yukon XL 5.3L
- 2023 GMC Yukon XL 5.3L
- 2024 GMC Yukon XL 5.3L
FAQs
Do I need flycutting for the STG4 cam?
Yes. The STG4 requires piston flycutting due to reduced piston-to-valve clearance in L83 engines.
What stall converter should I use?
A 4000+ stall converter is required to maintain drivability and keep the engine in the ideal powerband.
Why Buy from Beefcake Racing?
Beefcake Racing provides expert recommendations, fast shipping, and proven performance support for all LS/LT combinations. Need help selecting the right L83 cam?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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