07-070 HELMETS & AUDIO PRIMARY & CLUTCH CONTROL CABLES & HYDRAULIC LINES OIL, OIL FILTERS & OIL COOLERS SEAT TRANSMISSION FOOT CONTROLS HARDWARE EXHAUST GASKET & SEALS FRONT FORKS WINDSHIELD ELECTRIC & LIGHT FINAL DRIVE FRAME & REAR SUSPENSION LUGGAGE ENGINE ELECTRICS WHEELS & TIRES FENDER & STRUTS TOOLS & CHEMICALS INTAKE BRAKE GAS & OIL TANK TECH TIPS & CROSS REF OEM>ZPN ENGINE HANDLEBAR, HAND CONTROLS & MIRRORS GAUGES & DASHES ALPHABETICAL INDEX EVOLUTION BIG TWIN CAM SPECIFICATION CHART Valve Timing Open/Close Valve Duration Valve Lift Lift@TDC Intake Exhaust Intake Exhaust Intake Exhaust S&S 508 11°/26° 50°/6° 217° 236° .508" .141" .110" S&S 510V 20°/38° 52°/20° 238° 252° .510" .187" .178" S&S 520 0°/40° 50°/2° 220° 232° .520" .086" .094" S&S 561 32°/40° 50°/26° 252° 256° .560" .252" .210" S&S 585V 20°/45° 60°/20° 245° 260° .585" .186" .180" S&S 600 20°/55° 60°/20° 255° 260° .600" .218" .198" S&S 631 34°/61° 66°/29° 275° 275° .630" .281" .221" S&S 640 25°/60° 65°/20° 265° 265° .640" .222" .192" S&S 640 GRIND For real Big Inch engines with 10: 1 thru 11.5: 1 compression ratio. Works with hydraulic tappets and adjustable push rods. The camshaft that comes standard in S&S 124 CI Super Side Winder motors. 750292 S&S 640 Grind S&S 631 GRIND The Hottest cam for all High RPM engines with 11: 1 and higher compression ratio, or 12: 1 and over in smaller bore engines. Works with Solid or Hydraulic tappets and adjustable push rods. 750291 S&S 631 Grind S&S 600 GRIND For 80 thru 96 CI engine with 10.5: 1 thru 11: 1 compression ratio, or larger engines with a 10: 1 to 10.5: 1 compression ratio. Use with hydraulic tappets and adjustable push rods. 750290 S&S 600 Grind S&S 585V GRIND For 80 thru 96 CI engine with 10: 1 thru 10.5: 1 compression ratio, or larger engines with a 9.5: 1 to 10: 1 compression ratio. Use with hydraulic tappets and adjustable push rods. 750289 S&S 585V Grind S&S 561 GRIND The best cam available for 80 to 96 CI engines with a 9.5: 1 to 10.5: 1 compression ratio, hydraulic tappets and adjustable push rods. 750287 S&S 561 Grind S&S 520 GRIND Provides good low end and mid range performance in engines up to 96CI with 8.5: 1 to 10: 1 compression ratio. Use with hydraulic lifters and adjustable push rods. 750285 S&S 520 Grind S&S 510V GRIND Replacement of the popular S&S 502 cam, but with better low and midrange torque and improved ramp design for quieter operation. Will bolt in with stock or mildly ported heads, stock push rods and hydraulic tappets. Works best with 9: 1 to 10: 1 compression ratio and up 96 CI. 750641 S&S 510V Grind S&S 508 GRIND Bolt-in cam for stock 80 CI (1,340 cc) engines with less than 10: 1 compression ratio. Quiet valve train with excellent low and mid range torque for touring and 2-up riding. Works with stock push rods, stock valve springs and hydraulic tappets. 752166 S&S 508 Grind S&S claims that their camshafts and other related valve train parts go through extensive dyno testing and usage on the track and street. After they are satisfied with the proven performance they carefully select and match various components to make the best kit combinations. Since many S&S cams are high lift types, they are available with a cam only or in a kit with a set of the appropriate S&S high performance valve springs. Refer to the Cam Specification Chart for cam timing and lift information. Important information on S&S Evolution Style Cams in S&S Shovelhead Style Engines S&S complete Shovelhead engines are equipped with special tappet guides designed to use S&S Evolution style tappets. This requires that an Evolution style cam must be used in these engines, or in any engine equipped with S&S Shovelhead style tappet guides. When choosing a cam for this type of engine, be aware that the timing specifications will remain unchanged, but that the total valve lift will be reduced by about 9% from the specified value, due to the difference in rocker ratios between Shovelhead and Evolution style engines. 2065 S&S CAMS FOR EVOLUTION BIG TWIN (Ȧ*ȡ1ȝ CAMS FOR EVO BIG TWIN (Site 480)
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