Kelford camshafts, Ford Coyote Gen 2 5.0 (2015-2017)

Kelford camshafts, Ford Coyote Gen 2 5.0

Kelford is a New Zealand camshaft manufacturer with roots in Christchurch dating back to 1968. Its profiles range from upgrades for street-driven cars to fully built race engines. Choose the cam around the rest of the engine and its intended use, rather than simply picking the longest duration.

This selection is for the Ford Coyote Gen 2 5.0 engine. Profile differences, spring recommendations and required modifications are detailed below.

Technical specifications – available profiles for this engine

Profile 256-A

Stage 1 naturally aspirated street profile for an upgraded exhaust and adjustable engine management. Adds top-end pull to approximately 8500 rpm. Requires upgraded springs, with KVS255 recommended. Stock pistons are unsuitable. Aftermarket pistons with sufficiently deep valve pockets are required.

Manufacturer profile information

Profile 256-B

Stage 2 naturally aspirated race profile for a free-flowing exhaust and an upgraded intake, such as individual throttle bodies. Focused on mid-range torque and continued pull to approximately 9200 rpm. Requires aftermarket pistons with suitable valve pockets. Retains variable cam timing.

Manufacturer profile information

Profile 256-C

Stage 3 for a high-rpm naturally aspirated race engine with ported heads, high compression and extensively developed intake and exhaust. Usable range extends to approximately 10200 rpm. Requires aftermarket pistons with deep valve pockets. Kelford recommends switching to fixed cam timing.

Manufacturer profile information

Profile 256-TA

Stage 1 street turbo profile for around 800–1400 hp with twin 54–62 mm turbos, working to approximately 8500 rpm. Compatible with stock pistons at Kelford's specified cam timing, but piston-to-valve clearance must be checked during installation. Requires KVS255 springs. Kelford reports a 10–15% power increase over stock cams, depending on the engine and tuning.

Manufacturer profile information

Profile 256-TB

Stage 2 drag profile for around 1700–2400 hp with twin 64–75 mm turbos. Designed for seven-to-eight-second quarter-mile cars, working to approximately 9200 rpm. Retains variable cam timing. Requires aftermarket pistons with deep valve pockets and KVS255 springs.

Manufacturer profile information

Profile 256-TC

Stage 3 turbo camshafts for extensively built Ford Coyote Gen 2 drag racing engines. The retailer describes applications above 2500 hp on methanol, with twin 76–85 mm turbochargers and operation around 10,200 rpm. Requires aftermarket pistons with deep valve pockets and upgraded valve springs. Recommended spring kit: KVS255. For exact duration and lift specifications, contact our sales team.

Retailer product information

Checking heights are shown with the duration figures. Net lift is the net valve movement specified by the manufacturer, while cam lift is listed separately. IVO/IVC denote intake valve opening/closing and EVO/EVC exhaust valve opening/closing. BTDC/ATDC mean before/after top dead centre, and BBDC/ABDC before/after bottom dead centre.

Installation and profile selection

Confirm the exact engine version, valvetrain design and the modifications required by the profile. Check cam timing and valve-to-piston clearance during installation. Springs, lifters and other supporting parts mentioned with a profile are not included unless the profile explicitly states that they come with the kit.

Examples of related vehicle applications

• Ford Mustang GT S550 5.0 Coyote Gen 2 (2015–2017)

The list covers versions with the specified engines only. Exact fitment and required modifications depend on the selected profile, cylinder head, lifters and timing system.

Kelford Cams