SKU: 7026S3
GSC Power-Division 2008+ Subaru WRX STI S3 Billet Camshafts 282/282
GSC Power-Division S3 billet camshafts fit 2008-2021 Subaru WRX STI models with EJ257 engines and Dual AVCS. These camshafts support 750-1000 WHP output across a 4500-9500 RPM range when paired with a built bottom end sleeved or closed deck ported heads and upgraded valve springs. A standalone ECU or speed density tune ensures stable idle control.
Key Features
- Billet Construction: Precision-machined from high-strength billet steel for durability in high-horsepower builds
- Intake Specs: 280° advertised duration 240° at 0.040″ lift of 11.55mm centerline 130° for strong mid-to-high RPM power
- Exhaust Specs: 280° advertised duration 241° at 0.040″ lift of 11.60mm centerline 128° for efficient scavenging
- Power Band: Targets 750-1000 WHP ideal for drag and track applications with extensive engine preparation
- Dual AVCS Compatible: Optimized timing works with factory variable valve timing for broad power delivery
Product Notes
- Long nose cams install on left side short nose on right side verify with product images
- High-lift lobes require head casting machining for clearance check during assembly
- Camshaft set weighs 12 lbs ships in 26 x 8 x 6 inch box
Installation Notes
- Professional installation recommended.
- Verify AVCS advance settings during install experienced engine builder required
- Clearance head castings and use upgraded valve springs for proper operation
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2014 | Subaru | Impreza WRX STI | Dual AVCS EJ257 |
| 2015-2017 | Subaru | WRX STI | Dual AVCS EJ257 |
| 2018-2021 | Subaru | WRX STI | Dual AVCS EJ257 |
Why Choose GSC Power-Division?
- Established leader in Subaru performance camshafts with track-proven designs
- Billet cores resist flex under extreme boost and RPM loads
- Engineered profiles deliver consistent power gains in competitive builds
Frequently Asked Questions
- Q: Will these cams fit pre-2008 Subaru STI models?
A: No these are designed exclusively for 2008+ WRX STI with Dual AVCS EJ257 engines - Q: What material are the camshafts made from?
A: High-strength billet steel cores with custom lobe profiles for maximum strength and longevity - Q: What break-in procedure is required?
A: Follow proper cam break-in process using high-zinc oil on flat tappet surfaces experienced technician advised
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed dimensions 26 x 8 x 6 inches
- Weight: 12 lbs
Reviews
There are no reviews yet.