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XE Computer Controlled 208/216 Hydraulic Roller Cam and Lifter Kit for Ford 5.0L; For stock H.O. or with mild modifications.

XE Computer Controlled 236/242 Hydraulic Roller K-Kit Chevrolet Big Block GEN VI; Best in high performance street and race engines. Needs intake, headers, lower gear, 2600+ stall and programmer.

Xtreme Energy 242/248 Hydraulic Roller Cam K-Kit for Ford 429,460; Street/strip applications, 10:1+ compression, 3000+ stall, intake, headers, gear.

Xtreme Energy 212/218 Hydraulic Flat Cam SK-Kit for Pontiac 265-455; Strong torque through low end and mid-range, good idle.

XE Computer Controlled 206/212 Hydraulic Roller Cam and Lifter Kit for Ford 5.0L; Good power in stock application with few modifications. Best for towing or economy.

Xtreme Energy 242/248 Hydraulic Roller K-Kit Chevrolet Big Block GEN VI; Best for serious street/ strip use with 10.5:1+ compression and 3000+ stall. Needs good intake, headers and ported heads.

Xtreme Energy 218/224 Hydraulic Flat Cam SK-Kit for Pontiac 265-455; Excellent response, good mileage, stock converter or 1800 stall. Mild gear.

XE Computer Controlled 216/224 Hydraulic Roller Cam and Lifter Kit for Ford 5.0L; Mild modifications, 3.27-3.73 gears, mass air, larger throttle body.

Xtreme Energy 248/254 Hydraulic Roller K-Kit Chevrolet Big Block GEN VI; Good for Pro Street and bracket racing. Needs 10.5:1+compression, 3500+ stall, very good intake, headers with low gears.

Xtreme Energy 224/230 Hydraulic Flat Cam SK-Kit for Pontiac 265-455; Good for street machines, slightly rough idle. 2000+ stall.

XE Computer Controlled 224/232 Hydraulic Roller Cam and Lifter Kit for Ford 5.0L; 2500+ stall, 3.55-3.73 gears, better heads, intake and fuel system.

Xtreme Energy 242/248 Hydraulic Roller K-Kit Chevrolet Big Block GEN VI; Works well with nitrous and blower applications. Needs 3000+ stall and all upgraded parts.