Kelford Performance Camshafts Ford Coyote 5.0L Gen2 (w/ GT350/GT500 Voodoo Heads)

Please confirm the correct camshaft application, engine code and required profile before purchase. Camshaft compatibility can vary according to cylinder head, valvetrain, turbocharger, compression ratio and intended engine speed. If unsure, contact the team for assistance. Restocking fees may apply to incorrect purchases.

Kelford Camshafts – Performance Street, Track and Motorsport Cams

Unlock the airflow, engine response and high-RPM performance your build demands with Kelford Camshafts. Designed and manufactured in New Zealand, Kelford performance camshafts are trusted by engine builders, tuners and motorsport competitors across street, circuit, drag, rally, drift, off-road and marine applications.

A performance camshaft controls when the engine’s valves open, how far they lift and how long they remain open. Kelford develops each camshaft range around the airflow characteristics, valvetrain design and performance potential of the intended engine platform. The result is a camshaft upgrade engineered to work with the cylinder head and supporting components rather than relying on a generic profile.

Whether the objective is improved mid-range torque, stronger top-end power, greater turbocharger efficiency or increased engine-speed capability, Kelford offers camshaft solutions for a wide variety of naturally aspirated and forced-induction engines.

Select the required Kelford part number from the available variants and confirm the complete build specification with your engine builder or tuner before ordering.

Why Upgrade to Kelford Camshafts?

Factory camshafts are designed to satisfy a wide range of production requirements, including emissions, fuel economy, manufacturing cost, noise and operation with standard engine components. Once an engine receives an upgraded turbocharger, ported cylinder head, higher compression ratio, improved intake system or freer-flowing exhaust, the original camshaft may restrict the amount of air the engine can process.

Kelford Camshafts are developed to increase the engine’s usable airflow and extend the powerband to suit its intended application. Depending on the selected camshaft and supporting modifications, this can improve cylinder filling, turbocharger response, torque delivery and power at higher engine speeds.

The correct camshaft upgrade allows the engine to take greater advantage of upgraded cylinder heads, intake manifolds, exhaust systems and forced-induction hardware. Rather than relying solely on additional boost pressure, a properly matched camshaft can help the engine move air more efficiently and continue producing power as engine speed increases.

• Increased airflow: Supports improved cylinder filling and greater power potential
• Optimised powerband: Camshaft options are available for street, track and competition engine combinations
• Forced-induction compatibility: Profiles are available for turbocharged and supercharged engines
• High-RPM capability: Performance cams can support engines operating beyond the useful range of factory camshafts
• Platform-specific development: Designed around the intended engine and valvetrain configuration

Engine-Specific Camshaft Development

Kelford does not treat every engine as though it requires the same camshaft characteristics. Valve size, port design, bore and stroke, rocker ratio, variable cam timing, combustion chamber design and forced-induction configuration all influence the camshaft required to achieve the intended result.

Kelford develops camshafts for a broad range of performance engines, including popular Subaru, Mitsubishi, Toyota, Nissan, Honda, Mazda, Audi, Volkswagen, BMW, Ford, Holden and Chevrolet platforms. The range also extends to selected powersports and personal-watercraft engines.

This application-specific approach makes Kelford Camshafts suitable for everything from modern variable-cam-timing engines through to established Japanese turbo platforms and American V8 combinations. The selected camshaft should always be matched to the exact engine variant rather than chosen solely by vehicle model.

Performance Street Applications

Kelford street-performance camshafts are suited to modified vehicles that require a stronger powerband without turning the engine into a narrowly focused race combination. When properly selected, these camshafts can complement upgraded turbochargers, intake systems, exhaust systems and engine-management calibration while retaining the response and drivability required for regular road use.

A street-oriented camshaft may improve mid-range torque, extend power beyond the factory camshaft’s effective range and help an upgraded turbocharger operate more efficiently. The exact idle quality, low-speed response and supporting hardware requirements will depend on the chosen profile and engine platform.

Choose a Kelford street camshaft for a performance engine that still needs to start cleanly, operate through normal traffic and deliver a broad, usable powerband. Final selection should be based on turbocharger size, compression ratio, cylinder-head flow, fuel type and target engine speed.

Track, Rally and Drift Applications

Track, rally and drift engines operate under sustained load and frequently spend more time at elevated engine speed than a road car. Kelford camshafts for these applications are designed to support stronger airflow through the upper portion of the rev range while maintaining the torque characteristics required to accelerate the vehicle between corners.

For circuit and time-attack vehicles, the correct camshaft can extend the usable powerband and reduce the need to upshift immediately before a braking zone. Rally applications may require a broader torque curve and strong response across changing engine speeds, while drift engines often benefit from predictable boost recovery and sustained power near the rev limiter.

Kelford Camshafts allow the engine builder to select a profile that complements the vehicle’s gearing, turbocharger, tyre grip and competition format. Supporting valve springs and accurate cam timing become increasingly important as lift, duration and engine speed rise.

Drag Racing and Extreme-Output Builds

High-output drag and roll-racing engines require camshafts capable of supporting exceptional airflow, high boost pressure and elevated engine speed. In these applications, the factory camshaft can become a significant restriction even when the engine is fitted with a large turbocharger and extensively modified cylinder head.

Kelford competition camshafts are available for serious engine combinations using oversized turbochargers, ported cylinder heads, increased displacement and high-strength valvetrain components. These cams are intended to help the engine continue producing power where milder profiles have reached their airflow limit.

Selecting a camshaft for an extreme-output engine requires a complete understanding of the build. Turbocharger dimensions, exhaust manifold design, cylinder-head flow, valve size, compression ratio and intended rev limit all influence the correct choice. The most aggressive camshaft is not automatically the best camshaft; the correct option is the one that places the powerband where the vehicle can use it.

Naturally Aspirated Performance Engines

Naturally aspirated engines rely heavily on camshaft design to control airflow and cylinder filling. Without boost pressure forcing air into the engine, cam timing, lift and duration become critical to producing torque and horsepower at the required engine speed.

Kelford naturally aspirated camshafts are available for street engines, high-compression builds, individual-throttle-body combinations and dedicated race engines. Depending on the application, a camshaft upgrade can improve high-RPM breathing, sharpen response and help the engine take advantage of ported cylinder heads and increased compression.

Aggressive naturally aspirated camshafts may require increased compression, valve-to-piston clearance, upgraded valve springs and adjustable cam gears to perform as intended. They should be treated as part of a complete engine combination rather than as an isolated bolt-on modification.

Turbocharged and Supercharged Engines

Forced-induction camshafts must be matched to the behaviour of the turbocharger or supercharger and the intended boost range. The correct camshaft can reduce restriction through the cylinder head, improve airflow at higher engine speeds and help a larger turbocharger produce a broader, more effective power curve.

Kelford develops performance camshafts for both responsive street turbo systems and large-frame competition combinations. Milder options may retain strong low-speed response while supporting increased power, whereas more aggressive camshafts are intended for engines with substantial cylinder-head, turbocharger and valvetrain upgrades.

Camshaft selection should consider turbine size, exhaust backpressure, boost target and the engine speed at which the turbocharger operates most efficiently. A camshaft that is too large for the turbo or engine combination may reduce response, while a camshaft that is too small may restrict power as airflow demand increases.

Variable Cam Timing Compatibility

Many modern engines use variable cam timing systems such as AVCS, VVT, VVT-i or comparable manufacturer-specific technology. Kelford offers camshafts designed around selected variable-timing engines, allowing the system to be retained where supported by the particular camshaft and build.

Correct ECU calibration is essential after installing camshafts in a variable-cam-timing engine. The tuner may need to revise cam-angle targets, idle control, fuelling, ignition timing and engine protection strategies to suit the new airflow characteristics.

Some high-lift or competition camshafts may require restrictions to the usable cam timing range to maintain valve-to-piston clearance. Adjustable limits, modified control strategies or engine-management changes may therefore be required depending on the engine and camshaft selected.

Kelford Valve Springs and Supporting Valvetrain Components

Many Kelford camshafts require upgraded valve springs to control the valve accurately at increased lift and engine speed. The spring must provide sufficient seat and open pressure to prevent valve float while retaining adequate clearance before coil bind.

Kelford offers matching valve springs and supporting valvetrain components for many of its camshaft applications. Depending on the engine, the complete installation may require upgraded retainers, valve guides, lifters, followers, buckets, lash caps or adjustable cam gears.

Do not assume that factory valve springs are suitable simply because the camshaft physically fits the cylinder head. Always follow the specifications for the selected camshaft and have the installed spring height, seat pressure, open pressure and coil-bind clearance checked during assembly.

• Valve springs: May be required to control additional lift and engine speed
• Retainers: Upgraded steel or titanium components may be specified
• Lifters and followers: Must be inspected and matched to the camshaft design
• Adjustable cam gears: May be used to degree the camshafts accurately
• Valve clearance: Lash and piston-to-valve clearance must be measured during installation

Professional Installation and Camshaft Degreeing

Kelford Camshafts should be installed by an experienced engine builder or performance workshop. Camshaft installation involves more than replacing the original components and aligning factory timing marks.

The camshafts should be degreed where required to confirm their installed centreline and ensure the actual valve events match the intended engine specification. Manufacturing tolerances across the cylinder head, block, timing components and cam gears can influence final cam timing.

The installer must also check valve lash, retainer-to-seal clearance, spring coil-bind clearance, piston-to-valve clearance and camshaft-to-cylinder-head clearance. Some engines may require clearancing around the cam lobes or adjacent cylinder-head components when higher-lift camshafts are installed.

Incorrect installation can result in poor performance, valvetrain noise, valve float, loss of compression or severe internal engine damage. Factory workshop procedures and Kelford’s application-specific instructions should be followed throughout the installation.

ECU Calibration Required

Aftermarket camshafts alter the engine’s airflow, volumetric efficiency and manifold pressure characteristics. Professional ECU calibration is required to ensure fuelling, ignition timing, idle control, boost control and variable cam timing are correctly matched to the new camshafts.

The vehicle should not be operated under high load using an unchanged calibration after camshaft installation. Incorrect tuning can cause unstable idle, poor response, unsafe air-fuel ratios, excessive exhaust temperature or engine damage.

For the best result, the tuner should be involved before the camshaft is purchased. This allows the camshaft profile, turbocharger and intended powerband to be planned as one complete combination.

Important Fitment Information

Kelford camshaft fitment is determined by the exact engine code, cylinder-head configuration and valvetrain design. Engines within the same vehicle family may use different cam triggers, variable-timing systems, lifters, journals or cylinder heads.

Product images may be generic and may not show the exact number, shape or configuration of camshafts supplied. Depending on the engine, a set may include one, two or four camshafts. Confirm the contents of the selected Kelford part number before purchase.

Some camshafts are designed as drop-in upgrades for otherwise standard engines, while others require valve springs, forged pistons, additional cylinder-head clearance or other supporting modifications. The requirements of one Kelford camshaft should not be assumed to apply to another profile.

Why Buy Kelford Camshafts?

• Engine-specific development: Camshafts are designed around the intended engine platform
• Street-to-race coverage: Options support responsive road cars through to professional competition builds
• Forced-induction expertise: Extensive support for popular turbocharged performance engines
• Supporting valvetrain range: Matching springs and related components are available for many applications
• Global motorsport experience: Used by engine builders and racers across numerous disciplines
• New Zealand engineering: Developed and manufactured using Kelford’s dedicated camshaft and valvetrain expertise

Before Ordering

Confirm the engine code, cylinder-head specification, turbocharger or induction system, compression ratio, fuel type, intended rev limit and target powerband before selecting a Kelford camshaft.

Camshaft choice should be confirmed with the workshop building or tuning the engine. Selecting a profile based only on advertised horsepower can produce a camshaft that does not suit the turbocharger, gearing, cylinder-head flow or intended vehicle use.

For the best performance and reliability, treat the camshafts, valve springs, cylinder head, engine management and supporting hardware as one complete system.