ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-66 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Cams Dyno proven POWER HOUSE Cams for maximum performance. From bolt-in, for more all around performance and touring, to .620” lift for those ground pounding street and strip machines. Valve TDC Lift Duration Timing Application Lift (at valve) (degrees) @ .053” Grind # Part # Hydraulic Lifters - Bolt-in for no head work installation. Stock .500” In. .174” In. 238 16/42 Performer 66876 springs OK. Excellent mid range performance with stock or Ex. .179” Ex. 240 44/16 500P ported heads. Low end power is not sacrificed for heavy two up riding and provides more snap throughout entire RPM range. Pulls surprisingly hard with stock heads to about 5600 RPM. Easy to tune for all type carburetors and exhaust systems. Hydraulic or Solid Lifters - Performance valve springs .530” In. .184” In. 242 18/44 GT 66877 recommended. Excellent cam for 80ci 9:1/10:1 compression Ex. .184” Ex. 246 50/16 530G works well with stock or ported heads. Performance cam for lighter Big Twins FX and FXR type wanting a good mid range with fairly strong top end. Re-worked carburetor jetting with performance exhaust and ignition is a real plus. Hydraulic or Solid Lifters - Performance valve springs required. .560” In. .182” In. 248 18/50 Viper 66880 The best cam for higher compression 80ci 9:1/11:1 Ex. .182” Ex. 252 54/18 560V compression good for strokers up to 96ci wanting lots of torque. Stock or ported heads. Should only be used with performance exhaust, carburetion and ignition. Very strong mid range with the ability to pull very hard up to about 6500 RPM depending on cylinder head air flow. Hydraulic or Solid Lifters - This is a hotter version of our .565” In. .209” In. 258 24/54 Viper Plus 66898 popular viper cam. Has a sophisticated profile fast intake ramp Ex. .189” Ex. 258 58/20 565VP with slower closing ramp for maximum cylinder fill. Requires springs with a minimum of 175/190 lbs. seat pressure. Perfect combination with high compression 10:1 plus compression 80ci and small stroker. Provides very strong upper mid range with 6500 RPM top end power. Use with mild to wild ported heads, good free flowing exhaust, performance carb and ignition and dig in for the ride of your life. Hydraulic or Solid Lifters - Performance valve springs and .595” In. .215” In. 264 24/60 Extreme 66879 ported heads recommended; run solid lifters to prevent damage Ex. .191” Ex. 264 64/20 595E from valve float if going to exceed 7000 RPM. Valve spring pressure should be minimum 180 lbs. seat pressure. High compression 80ci 11:1 compression will really turn on. This cam makes power from mid range to extremely high RPM. Hot set up for 88ci/98ci street strokers. Killer cam for street strokers up to 103ci below 10:5 compression. Solid Lifters only - Sophisticated profile fast intake ramp with .620” In. .285” In. 282 36/66 Monster 66897 slower closing ramp for maximum cylinder fill. Require spring with Ex. .251” Ex. 286 76/30 620M a minimum of 190 lbs. seat pressure. Best choice for 115ci/140ci 10:1 plus compression super big inch monster motor. Also works well with high compression 11:1 compression small stroker 88ci/98ci REV monster but doesn’t start kicking until you’re over 4500 RPM. Great for street use and occasional trips to the local track. POWER HOUSE CAMS FOR BIG TWIN EVOLUTION Not legal for sale or use in California, or on any pollution controlled vehicles.
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