GPI LT1 NA Stroker Cam - Stroker STG1 (2016 - 2024 Camaro | 2014 - 2019 C7 Corvette) - LT-STR1
Stage 1 NA Stroker Cam for Big-Inch LT1 Builds
The GPI LT-STR1 Stroker STG1 is the premier naturally aspirated stroker camshaft for LT1-powered 6th Gen Camaros and C7 Corvettes. Designed to deliver exceptional "under the curve" torque, crisp throttle response, and strong high-RPM power, this cam has become a benchmark for serious 416 - 427ci street/strip builds across the country.
Built for pump-gas-friendly compression levels around 12.5:1, the STG1 offers excellent drivability while supporting 7400 - 7500 RPM with a High Ram - style intake manifold. When paired with an MSD manifold, peak RPM shifts slightly lower - typically around 400 - 500 RPM less.
Optimized for 416 - 454ci LT1 Stroker Combinations
The LT-STR1 is part of GPI's dedicated NA stroker cam series engineered specifically for 416" - 454" LT1/LT4-based rotating assemblies. All combinations utilizing these cams should run a High RPM Spring Kit, especially with aftermarket or high-flow manifolds.
While Stages 2 and 3 require higher compression and race fuel (E85/C85), Stage 1 is the ideal choice for street-driven stroker builds needing strong power across the entire RPM band without sacrificing durability or manners.
STG1 NA Stroker Cam Specs - LT-STR1
- Duration (Int/Exh): 236 / 256
- Valve Lift (Int/Exh): .648 / .637
- LSA: 112
- ICL: +4
Performance Characteristics
- Excellent street manners for 416 - 427ci stroker builds
- Peak RPM capability of 7400 - 7500 with High Ram intake
- Approximately 400 - 500 RPM lower peak with MSD intake
- Ideal for 12.5:1 pump-gas compression ratios
- High-RPM spring kit required for all setups
- Designed for strong, broad torque curve and high-RPM horsepower
- Recommended converter range: 4F - 5FPX (4500 - 5500)
Quick Specs
- Engine: LT1 Stroker (416 - 454ci)
- Duration: 236 / 256
- Lift: .648 / .637
- LSA / ICL: 112 / +4
- Spring Kit: High RPM kit required
- Fuel: Pump gas compatible
- Peak RPM: Up to 7500 (High Ram), 7000+ with MSD
- Converter: 4500 - 5500 recommended
Fitment
Chevrolet Camaro
- 2016 Chevrolet Camaro
- 2017 Chevrolet Camaro
- 2018 Chevrolet Camaro
- 2019 Chevrolet Camaro
- 2020 Chevrolet Camaro
- 2021 Chevrolet Camaro
- 2022 Chevrolet Camaro
- 2023 Chevrolet Camaro
- 2024 Chevrolet Camaro
Chevrolet Corvette C7
- 2014 Chevrolet Corvette
- 2015 Chevrolet Corvette
- 2016 Chevrolet Corvette
- 2017 Chevrolet Corvette
- 2018 Chevrolet Corvette
- 2019 Chevrolet Corvette
FAQs
Is the STG1 Stroker cam good for daily driving?
Yes. Unlike STG2 and STG3, the STG1 is tailored for pump gas and moderate compression, offering excellent drivability while still supporting high RPM performance.
Do I need a High Ram manifold to run this cam?
A High Ram manifold unlocks the full 7400 - 7500 RPM capability, but the cam also performs well with MSD or other aftermarket intake systems at slightly lower peak RPM.
Why Buy from Beefcake Racing?
Beefcake Racing offers expert LT1 stroker guidance, fast shipping, and proven performance support for all LT platform builds. Need help choosing the right stroker cam for your combo?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
