GSC Power-Division Billet Evolution 4-8 S1 Camshafts

GSC Power-Division Billet Mitsubishi Lancer Evolution 4-8 S1 Camshafts

$747.30
$747.30 $747.30
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GSC Power-Division Billet Evolution 4-8 S1 Camshafts
GSC Power-Division Billet Mitsubishi Lancer Evolution 4-8 S1 Camshafts
SKU: GSC7008S1

GSC Power-Division Billet Mitsubishi Lancer Evolution 4-8 S1 Camshafts

Out of stock: 0
$747.30
$747.30 $747.30

Prop 65 Warning

This product can expose you to chemicals including Nickel, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

The GSC Power-Division billet S1 cams for the Mitsubishi Evo 4-8 are designed for those with the stock turbo up to the 550 WHP stock location or aftermarket turbo kits. These cams will not sacrifice any bottom end loss over stock cams; nothing but gains, and will promote faster spooling of the upgraded turbos. Gains of 30-55 WHP (depending on turbo) have been seen by simply bolting the S1 cams in.

    If using aftermarket cam gears (especially AEM) check the bolt length. Some cam gears are too thick for the OEM bolt on the billet cams, a 40mm underhead length bolt may be necessary in this case

    Product Details
    • Designed for a rev range of 3000-7500 RPMs
    • These cams work well on the stock valve springs with lower boost and RPM goals
    • Idle is slightly rougher than stock 
    • Made 100% in the USA
    Product fitment
    4G63T Evo 1-3
    4G63T Evo 4-8
    4G63T Evo 9 Mivec
    CAMSHAFT CARD - GSC7008S1

    IMAGES ARE FOR ILLUSTRATION PURPOSES ONLY.

    INTAKE
    ADV Duration
    268°
    Duration @ 0.040"
    216°
    Peak Lift
    11.00 mm
    Center Line
    107.0
    EXHAUST
    ADV Duration
    268°
    Duration @ 0.040"
    220°
    Peak Lift
    10.50 mm
    Center Line
    113.0

    Camshafts

    GSC Power-Division camshafts are engineered to maximize airflow, power production, and usable RPM while maintaining the valvetrain stability required for real-world performance. Unlike generic “one-size-fits-all” profiles, GSC camshafts are developed using application-specific analysis that considers cylinder head flow characteristics, valvetrain geometry, rocker motion, intended powerband, fuel type, and engine configuration.

    Manufactured from forged barstock in house with precision-ground lobe profiles, GSC cams are trusted by engine builders, tuners, racers, and enthusiasts around the world — from street cars to record-setting drag programs. Whether the goal is improved response, broader power delivery, or extreme horsepower capability, GSC camshafts are built around one principle: maximizing performance without compromising valvetrain control.

    Frequently Asked Questions

    What makes GSC Power-Division camshafts different?

    GSC Power-Division camshafts are engineered specifically for high-performance applications using proprietary lobe designs, premium billet materials, and advanced manufacturing processes. Every camshaft profile is developed to maximize airflow, power, durability, and valvetrain stability for its intended application.

    How do I choose the correct camshaft for my application?

    The best camshaft depends on your engine configuration, turbocharger size, intended RPM range, fuel type, cylinder head setup, and horsepower goals. If you’re unsure, contact our technical support team for recommendations.

    Will aftermarket camshafts increase horsepower?

    Yes. Properly matched camshafts can significantly improve airflow, power, torque, and RPM capability. Actual gains depend on the overall engine combination.

    Do I need valve springs with aftermarket camshafts?

    In many cases, yes. More aggressive camshaft profiles require upgraded valve springs to maintain valve control at higher RPMs and boost levels. Product pages will indicate whether upgraded springs are required.

    Can I use GSC camshafts with OEM valve springs?

    Some Stage 1 camshafts are compatible with OEM springs under certain conditions. Always verify spring requirements listed on the product page before installation.

    Do I need a tune after installing camshafts?

    Most performance camshaft installations benefit from ECU recalibration. A proper tune helps maximize power, drivability, and reliability.

    Are your camshafts billet?

    Yes. GSC performance camshafts are manufactured from premium forged billet cores for maximum strength and durability.

    What is BLACK ISE?

    BLACK ISE is GSC’s advanced surface treatment process designed to reduce friction and enhance durability in high-performance valvetrain environments.

    GENERAL F.A.Q

    Where are GSC products manufactured?

    Many GSC products, including our camshafts, are designed, machined, and finished in-house at our facility in South Carolina, USA. We maintain strict quality control throughout the manufacturing process.

    How long has GSC been in business?

    GSC Power-Division has been serving the performance automotive industry for over 20 years, supplying racers, engine builders, tuners, and enthusiasts worldwide.

    Do you sell directly to consumers?

    Yes. We sell directly through our website and also through an extensive network of authorized dealers and distributors worldwide.

    Does GSC cover engine damage?

    GSC’s warranty covers defects in the product itself. Consequential damages, including engine damage, labor, towing, or vehicle downtime, are not covered.

    Will racing void my warranty?

    Products used in racing or competition environments are subject to conditions outlined in our warranty policy. Performance applications inherently involve risks beyond normal operating conditions.

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