SOHC - Thumpr NSR (No Springs Required): 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.
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.
SOHC - Thumpr NSR (No Springs Required): 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.; 265/298 Advertised Duration, 226/246 Duration .050", .450"/.450" Lift, 109 Lobe Separation; Part #26113-24 valve springs available but not required; Steel retainer part #710-24 and titanium retainer part #702-24 also available;
Ford: F-150 09 - 10 4.6 L Engine, Mercury: Mountaineer 06 - 10 4.6 L Engine, Ford: Expedition 04 - 04 4.6 L Engine, Lincoln: Mark LT 06 - 10 5.4 L Engine, Ford: Grand Marquis 04 - 04 4.6 L Engine, Ford: F-250 04 - 09 4.6 L Engine, Ford: Expedition 05 - 14 5.4 L Engine, Ford: Lobo 04 - 10 4.6 L Engine, Ford: Lobo 04 - 10 5.4 L Engine, Ford: Explorer Sport Trac 07 - 10 4.6 L Engine, Ford: Econoline 04 - 06 4.6 L Engine, Ford: F-150 04 - 10 5.4 L Engine, Ford: F-250 Super Duty 05 - 10 5.4 L Engine, Lincoln: Navigator 05 - 14 5.4 L Engine, Ford: Mustang 04 - 10 4.6 L Engine, Ford: Explorer 04 - 10 4.6 L Engine, Avanti: Avanti 05 - 07 4.6 L Engine, Ford: F-350 Super Duty 05 - 10 5.4 L Engine