Improve the performance of Ford’s 4.6L or 5.4L 2V engines with Trick Flow® Track Max® Hydraulic Roller Camshafts and Valve Spring Upgrade Kits. Kit TFS-K51802001 is designed for mild naturally aspirated street engines operating in the 1,500-5,000 rpm range. Kit TFS-K51802002 is ideal for mild street/strip engines with power adders (5-6 psi of boost maximum) and an operating range of 1,800-6,500 rpm. Kit TFS-K51802003 is recommended for naturally aspirated extreme duty engines. It delivers strong mid-range to top-end power up to 6,500 rpm. Kit TFS-K51802004 was developed for maximum duty race engines using power adders with boost pressures of 15-plus psi and operating in excess of 6,500 rpm. Each kit includes new camshafts, valve springs, chromoly retainers, valve locks, seals, 12mm bolts and washers, and installation instructions. PCM tuning is recommended for maximum performance; piston-to-valve clearance measurements should also be performed (required for kit TFS-K51802004).

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