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Xtreme Energy 206/212 Hydraulic Flat Cam for Chevrolet Big Block 396-454; Very strong torque, excellent mileage, smooth idle.

Xtreme Energy 236/242 Hydraulic Roller Cam for Chrysler 426 HEMI; 3.91+ gear, 2800+ stall, 9.5:1+ compression, needs headers, rough idle.

Xtreme Energy 230/236 Hydraulic Roller Cam for Chevrolet Big Block GEN VI; For high performance street engines, needs 2500+ stall, improved intake manifold, headers and lower gears.

Xtreme Energy 242/248 Hydraulic Roller Cam for Chrysler 426 HEMI; 4.10 gear, 3000+ stall, 10:1 compression, very rough idle. Pro Street/bracket.

XE Computer Controlled 230/236 for Chevrolet Big Block GEN IV; Best in high performance street engines, needs intake, headers, 2400+ stall converter and programmer.

Xtreme Energy 236/242 Hydraulic Roller Cam for Chevrolet Big Block GEN VI; Street/strip applications with 10:1+ compression and 2800+ stall. Rough idle, needs good intake and headers.

Xtreme Energy 212/218 Hydraulic Flat Cam for Chevrolet Big Block 396-454; Strong torque thru low and mid-range, good idle.

Xtreme Energy 212/218 Hydraulic Roller Cam for Ford 351W; Mild performance applications, good low end and mid-range, good idle.

XE Computer Controlled 236/242 Hydraulic Roller Cam 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 for 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 248/254 Hydraulic Roller Cam for 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 218/224 Hydraulic Flat Cam for Chevrolet Big Block 396-454; Strong torque. Excellent response, heavy towing in 454 with 4.10 gear.