SKU: 7008R4
GSC P-D Mitsubishi 4G63T Evo 4-9 R4 Camshafts 295/310 Billet (Drag Race Engine Only)
GSC P-D R4 camshafts provide drag race power for Mitsubishi 4G63T engines in Lancer Evolution 4-9 models. These billet units offer 295-degree intake duration and 310-degree exhaust duration with high lift for maximum airflow and horsepower in high RPM ranges. Drag builders rely on them for 1000+ hp 4G63T builds.
Key Features
- Billet 8620 cores: Handle extreme drag race loads and high boost pressures without flexing
- TiN coated lobes: Reduce friction wear and maintain performance over multiple seasons of hard use
- 295/310 duration: Intake 295 degrees exhaust 310 degrees at 1mm lift for peak power above 8500 RPM
- High lift profiles: 13.50mm intake 14.00mm exhaust lift maximizes valve opening for superior breathing
- Drag specific design: Proven in record-setting Evo drag cars with massive top-end power delivery
Product Notes
- For drag race engines only street use not recommended due to extreme profiles
- Pair with GSC Super Alloy valve springs and titanium retainers for reliability
- Verify piston to valve clearance before final assembly
Installation Notes
- Professional installation recommended.
- Valve lash settings Intake 0.320in Exhaust 0.340in cold
- Compatible with stock or aftermarket DOHC 4G63T heads no special hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1996-1998 | Mitsubishi | Lancer Evolution | IV |
| 1998-1999 | Mitsubishi | Lancer Evolution | V |
| 1999-2001 | Mitsubishi | Lancer Evolution | VI |
| 2001-2003 | Mitsubishi | Lancer Evolution | VII |
| 2003-2005 | Mitsubishi | Lancer Evolution | VIII |
| 2005-2006 | Mitsubishi | Lancer Evolution | IX |
Why Choose GSC Power-Division?
- Engineers valvetrain for top drag teams and championship winners
- Cams ground on dedicated CNC equipment for exact profiles
- Backed by dyno data from hundreds of 4G63T installations
Frequently Asked Questions
-
Q: Will these camshafts fit my Evo 7 4G63T?
A: Yes they bolt directly into all Evo 4-9 DOHC 4G63T cylinder heads with no modifications -
Q: What material are the lobes and cores?
A: Billet 8620 steel cores with hard Titanium Nitride coated lobes for heat and wear resistance -
Q: What valvetrain upgrades are required?
A: GSC dual valve springs minimum plus check retainer compatibility for high RPM stability
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective elongated box 24in x 6in x 6in
- Weight: 4.8 lbs
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