GPI LSA / LS9 / LS PD Blower Camshaft - LS SS2 Blower - SC-STG2
High-Lift Street/Strip Camshaft for LSA, LS9 & PD-Blown LS Engines
The GPI LS SS2 Blower camshaft is engineered for the enthusiast who wants stronger top-end power than the SS1 while still maintaining excellent torque and street drivability. Designed specifically for LSA, LS9, and other positive displacement supercharged Gen IV LS engines, this cam takes blower cars like the ZL1, CTS-V, and ZR1 to a whole new level.
This is a high lift camshaft and requires the correct valvetrain support for reliability under boost. With the right build and a 3000+ stall converter, the SS2 delivers outstanding low-end torque similar to the SS1 but adds roughly 10 - 15 more horsepower up top. The powerband remains extremely strong all the way to about 6700 RPM.
High Lift Valvetrain Requirements
GPI specifies the following components as mandatory for proper operation:
- Dual .660" valve springs
- Hardened pushrods
- AFM / DoD delete
Street/Strip Design for Stronger Top-End Power
The SS2 Blower cam is ideal for the enthusiast looking for a step up from the SS1 without sacrificing drivability. Recommended for builds running a 3000+ RPM stall converter, the SS2 delivers:
- Torque output rivaling the SS1 with improved throttle response
- 10 - 15 more horsepower up top thanks to increased duration and lift
- Strong pull to ~6700 RPM for extended top-end charge
- Improved performance with added gear ratio in the rear end
This grind is a proven performer for both street cars and strip-focused blower builds looking for a more aggressive cam without stepping into full-race territory.
Proven GPI Performance
GPI camshafts are among the most popular LS upgrades for a reason. Their cam and head packages dominate race tracks nationwide, with options spanning mild street upgrades to high-RPM all-out racing profiles. The SS2 sits comfortably in the middle - an aggressively tuned blower cam that preserves respectable manners while significantly increasing power output.
SS2 Blower Cam Specs - SC-STG2
- Duration (Int/Exh): 225 / 243
- Valve Lift (Int/Exh): .637 / .629
- LSA: 119.75
- ICL: +7.75
- RPM Range: Extremely strong to ~6700 RPM
- Converter: 3000+ stall recommended
- Rear Gear Ratio: Increased ratios recommended
Quick Specs
- Application: LSA / LS9 / positive displacement supercharged LS
- Cam Type: High lift PD blower cam
- Duration: 225 / 243
- Lift: .637 / .629
- LSA / ICL: 119.75 / +7.75
- Idle: Street/strip friendly with proper converter
- Converter: 3000+ RPM required
- RPM Capability: Pulls to ~6700 RPM
- Valvetrain: Dual .660" springs & hardened pushrods required
- AFM/DoD: Delete required
Features & Benefits
- Engineered for LSA, LS9, ZL1, CTS-V, ZR1 and other PD LS builds
- Strong low-end torque with increased top-end horsepower
- Street/strip focused for balanced performance
- Excellent blower efficiency through tailored duration and lift
- Aggressive but manageable manners with the proper converter
- Part of GPI's proven cam lineup dominating tracks across the country
FAQs
How does the SS2 compare to the SS1 blower cam?
The SS2 retains similar torque characteristics but adds 10 - 15 horsepower up top and pulls harder to around 6700 RPM. It requires a 3000+ stall converter.
Do I need supporting mods for the SS2?
Yes. Dual .660" valve springs, hardened pushrods, and an AFM/DoD delete are required. A 3000+ stall converter and upgraded rear gear ratio are recommended for best results.
Why Buy from Beefcake Racing?
Beefcake Racing offers proven expertise with LSA, LS9, and positive displacement blower builds. Whether you're choosing between GPI cam stages or planning a full PD supercharger setup, our team provides real-world recommendations and fast support.
Call 1-855-827-7223 or email sales@beefcakeracing.com for personalized help.
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