2003 Mercury Mountaineer Performance Engines

Great upgrade for stock engine. Solid power gains above 4700 RPM, compatible with stock springs. Works with stock tune.

Powerful mid-RPM range cam for bolt-on blowers at stock boost levels. Solid power gains above 4400 RPM, requires spring upgrade. Stock gears and converter OK. Requires custom tuning.

Street/strip, needs higher gear ratio, 2400+ stall. Intake, exhaust, requires custom tuning. Rough idle.

Max effort street/strip cam with very rough idle, needs ported heads. Good midrange with incredible power up to 7000+ RPM. Solid power gains above 4900 RPM. Spring/phaser upgrade and custom tuning required. 4.10+ gears and 3200+ stall.

Solid power gains above 4900 RPM, compatible with stock springs. Works with stock tune. Best with 3.73 gear & 2500 stall. Great idle.

Competition Cams High Energy 215/224 Hydraulic Roller Cam for Ford 4.0L 6 Cylinder, 49-422-8.

Excellent mid-range cam for bolt-on blowers with stock boost levels. Great power gains above 4700 RPM, compatible with stock springs. Best with stock gears. Works with stock tune.

COMP Cams 127450 is a high-performance camshaft set from the XFI SPR series, engineered for Ford 4.6L and 5.4L Modular 3-Valve engines. It delivers aggressive mid-to-high RPM horsepower gains, an extended usable RPM range up to 6,700, and a distinctive lopey idle-perfect for street/strip builds with blower setups.

Extremely rough idle, needs stroker motor and/or ported heads. Major hp gains to 6800 RPM. Best with 3.73+ gears and 2500 stall. Compatible with stock valve springs, requires cam phaser upgrade.

Mid to upper range cam for bolt-on blowers with high boost. Noticeable idle, solid power gains above 4900 RPM, requires spring upgrade. Best with 3000+ stall. Requires custom tuning.

“COMP Cams 102300 is a “”hot street”” camshaft from the Xtreme Energy series, built for Ford 4.6L/5.4L Modular 2-Valve SOHC engines. It delivers aggressive midrange and top-end horsepower, a rough idle lope, and requires supporting upgrades like gears, stall converter, and custom tuning.”

Great idle with excellent power. Good mid-range torque and power gains above 4500 RPM. Compatible with stock valve springs, converter and gears; requires cam phaser upgrade and custom tuning.

Max effort blower cam with very rough idle, needs ported heads. Great mid-range power With incredible gains up to 7000+ RPM. Solid power gains above 4900 RPM, requires spring/phaser upgrade. Requires custom tuning. 4.10+ gears, 3200+ stall.

Mid to upper range cam for bolt-on blowers running higher boost psi. Major power gains above 4900 RPM, compatible with stock springs. Best with 3.73+ gears & 2500 stall. Great idle. Works with stock tune.

“Edelbrock part No: 5022 Torker-Plus Camshaft is designed for small-block Ford 289-302 V-8 applications. The camshaft works well with Torker II manifolds for performance from 2500 to 6500 rpm, this camshaft is ideal for high-performance street, drag or marine applications. Torker-Plus cams have a slightly rough idle and are not suitable for trucks or towing applications. Hydraulic flat tappet lifters are included with each camshaft. Camshaft Specifications: – Duration at .050 Intake: 214 degrees – Duration at .050 Exhaust: 224 degrees – Lift at Valve Intake: .472″” – Lift at Valve Exhaust: .496″” – Lobe Separation: 112 Degrees – Intake Centerline: 107 Degrees”

COMP Cams Tri-Power Xtreme modular 2-valve camshafts have been designed to work with the FAST-FLASH programmers to optimize torque and horsepower and improve fuel efficiency. They are available for late model, fuel injected, computer-controlled engines. These 2-valve camshafts feature a hydraulic roller swinging follower design, work with a standard valvetrain, and require no modifications to install.

“Edelbrock part No: 7122 Performer RPM Camshaft is designed for small-block Ford 289-302 V-8 applications. This Edelbrock cam kit produced 367 HP & 340 ft-lbs. of torque when used with No: 7121 intake and No: 60259 cylinder heads on a 302 engine. The camshaft works well with high-performance’s street applications, Performer RPM cams provide power from 1500 to 6500 rpm. This hydraulic lifter camshaft is dyno-matched to Performer RPM manifolds for high-rpm horsepower while still maintaining acceptable low-end torque. With 10 to 12 inches of manifold vacuum at idle, Performer RPM cams have more lift and duration than most street camshafts. Hydraulic flat tappet lifters are included with each Performer RPM camshaft. Camshaft Specifications: – Duration at .050 Intake: 224 degrees – Duration at .050 Exhaust: 234 degrees – Lift at Valve Intake: .496″” – Lift at Valve Exhaust: .520″” – Lobe Separation: 112 Degrees – Intake Centerline: 107 Degrees – Idle Vacuum at 1000 RPM’s: 11″””

Serious street cam, noticeable idle. Solid power gains above 4600 RPM, requires spring upgrade. Works with tuners, recommend custom tuning. Best with 3.90 gears and 3000 stall.