ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-76 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 Cam Valve Timing Valve Duration Valve Centerline Lift @ TDC Easy Start Standard Grind Intake Exhaust Intake Exhaust Lift Intake Exhaust Intake Exhaust Part # Part # 510 20˚/38˚ 52˚/20˚ 238˚ 252˚ .510” 99.0˚ 106.0˚ .187” .178” ----- 66854 551* 17˚/19˚ 41˚/17˚ 216˚ 238˚ .550” 91.0˚ 102.0˚ .178” .170” 66850 66855 570 20˚/40˚ 55˚/20˚ 240˚ 255˚ .570” 100.0˚ 107.5˚ .187” .179” 66851 66856 583 5˚/18˚ 58˚/24˚ 203˚ 262˚ .583” 96.5˚ 107.0˚ .113” .206” 66852 66858 585 20˚/45˚ 60˚/20˚ 245˚ 260˚ .585” 102.5˚ 110.0˚ .186” .179” 66853 66857 MR103 13˚/33˚ 50˚/22˚ 226˚ 252˚ .585” 100.0˚ 104.0˚ .172” .177” 66936 66933 HP103 20˚/49˚ 45˚/26˚ 249˚ 251˚ .575” 102.7˚ 101.5˚ .199” .206” 66937 66938 • Great way to increase performance at an affordable price. • Quick installation - reuse many of the stock components. • Easy Start Cams allow stock starter to start any engine. *551 cams are not recommended with compression ratio of 10:1 or higher. Cams Features & Benefits S&S® CHAIN DRIVE CAM KITS Easy Start Chain Drive Cams for 2007/Later Standard Chain Drive Cams SPECIFICATIONS OF S&S® CHAIN DRIVE CAMSHAFTS FOR BIG TWIN 2007/LATER • 510G: Designed as a bolt in cam for 88”, 95”, and 96” engines with compression ratios below 9.7:1., it is primarily intended for use with stock, un-ported heads. 3000-5500 rpm. Bolt-in overall. • 551G: Designed for engines with 96” to 106”and 9:1 to 9:9 compression. This a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and mid-range torque, strongest from idle-4000 rpm. • 570G: Designed for 88” to 103” engines with compression ratios between 9:1 and 10:1. This cam will provide a nice power increase across the entire power band. 3200- 5700 rpm. Excellent bolt-in for overall power on 103”. • 583G: Optimized for use in the Softail®/Dyna® lines, this cam makes horsepower and torque that you can feel all the way through the rpm range, making the most power right where you need it. 1500-5000 rpm. • 585G: Designed for 88” to 95” engines with compression ratios from 9.7:1 to 10.5:1 and 100” to 124” engines from 9:1 to 10:1 compression. Provides massive horsepower and torque increases starting at 3000 rpm, and holds steady all the way to redline. 35006000 rpm for 88”- 103” engines and 2500-5500 rpm for larger engines. • MR103: Designed as bolt-in cams for 103 CID engines with stock 9.7:1 compression ratio up to 10.5:1. Works well with stock, un-ported heads, but is great for S&S CNC ported heads. More power across the rpm range, best results from 2500-5500 rpm. Bolt-in. • HP103: Designed as bolt-in cams for engines with 103 and stock 9.7:1 compression up to 10.5:1. Works well with stock, un-ported heads, but is great for S&S CNC ported heads. Best power in the higher rpm range, 3000-6000 rpm. Bolt-in. CAM CHANGE KIT FOR MILWAUKEE-EIGHT® Fits Milwaukee-Eight® 2017/Later Description OEM # Quantity Cam Bearing 9215 1 Tappet Cover Gasket 25700362 2 Cam Cover Gasket 25700370 1 Exhaust Gasket 65324-83A 2 Push Rod O-Ring 11132 4 Push Rod O-Ring 11190 5 Push Rod O-Ring 11145 4 O-Ring 11900103 1 Kit Contains Part 66447 Installation kits are included with cam kits Not legal for sale or use in California
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