Comp Cams "Naturally Aspirated-Hi-Perf.Street" 99-04 Cobra/Mach1

Comp Cams has a variety of bumpsticks for the DOHC 4.6L Modular Motor with a range of grinds to suit your performance goals and driving style. Sold as set of Four. Review the specs below.

427-106300 - Naturally Aspirated- Hi-Po Street

No Computer Modifications Needed.

Excellent Torque & Horsepower Gains

MUST USE: Valve Spring Kit # 26123-32

Noticeable Idle

RPM Range: 1500-5800

Valve Lift: .425/.450

Advertised Duration: 261/259

.050 Duration: 226/224

Lobe Separation: 114 Degrees