GPI LSA / LS9 / LS PD Blower Camshaft - LS SS4 Blower - SC-STG4
Extreme-Performance Blower Cam for Maximum Output
The GPI LS SS4 Blower camshaft is engineered for enthusiasts pushing their LSA, LS9, and positive displacement supercharged Gen IV LS engines to the absolute limit. Built for maximum airflow and top-end power, the SS4 is the most aggressive blower-specific cam in the lineup - designed to take ZL1, CTS-V, ZR1, and similar platforms to the next level of high-performance capability.
As with all cams in this family, the SS4 features a high lift profile and requires dual .660" valve springs, hardened pushrods, and an AFM/DoD delete for proper installation and longevity.
Track-Proven GPI Engineering
GPI camshafts have become some of the most respected components in the PD blower LS world because they are developed, tested, and refined in real racing environments. The SS4 follows that same lineage, delivering unmatched high-RPM stability and upper-end power where positive displacement blowers thrive.
Built for the most serious power-seekers, the SS4 Blower cam is ideal for drivers who want maximum airflow and horsepower and are willing to match it with proper gearing, converter selection, and supporting hardware.
Top-End Focused Performance
Where the SS1, SS2, and SS3 offer balanced blends of drivability and power, the SS4 is purpose-built for aggressive blower applications that demand more lift, more duration, and more high-RPM efficiency. This grind is an excellent foundation for high-boost, high-power street/strip machines.
- Engineered for maximum horsepower gains in PD blower platforms
- Optimized for ZL1, CTS-V, ZR1 and other LSA/LS9 applications
- High lift profile for superior airflow characteristics
- Designed for drivers seeking the absolute peak of the SS blower cam series
GPI Blower Cam Series Overview
GPI's blower cam lineup covers everything from near-stock drivability enhancements (SS1) to full street/strip killers (SS3), and now the SS4 - designed to push the limits even further. For unique combinations, custom-spec options are also available, but the SS4 serves as the flagship extreme-performance offering.
Quick Specs
- Application: LSA / LS9 / PD supercharged LS engines
- Cam Type: High lift blower cam
- Valvetrain: Dual .660" springs & hardened pushrods required
- AFM/DoD: Delete required
- Performance Level: Highest in the SS series
- Intended Use: Maximum-effort street/strip & high-boost builds
Features & Benefits
- Most aggressive cam in the GPI PD blower lineup
- Maximum airflow for highest HP potential
- Designed for high-boost, high-RPM applications
- Perfect for extreme ZL1, CTS-V, and ZR1 builds
- Track-developed for proven real-world performance
FAQs
How aggressive is the SS4 compared to the rest of the SS blower cams?
The SS4 is the most extreme blower cam in the GPI lineup, offering the greatest airflow and top-end horsepower potential. It is meant for serious high-boost street/strip builds.
What supporting mods are required?
As a high lift cam, the SS4 requires dual .660" springs, hardened pushrods, and an AFM/DoD delete. Proper converter selection, gearing, and tuning are strongly recommended.
Why Buy from Beefcake Racing?
Beefcake Racing offers top-tier support for supercharged LS performance and carries the full GPI camshaft lineup. Whether you're building a dedicated street/strip weapon or pushing a blower setup to its limit, our team provides expert guidance and quick shipping to get your project moving.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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