S&S Cycle

CAMSHAFT OVERVIEW OES: Original Equipment Specification (OES). A bolt-in replacement cam with stock cam timing is designed for riders with stock engines. Does not require tuning. Bolt-in stock. Equivalent to HD® A-Grind 505C: Bolt-in cam, low-end torque and mid-range horsepower. Good for heavy bikes. Stock comp. ratio. Compatible with stock valve springs. Range: Idle to 5,000 rpm 509: Designed as a bolt-in, high torque cam for 1999–'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle–4500 rpm. Bolt-in torque. 510: Designed as a bolt-in cam for 88, 95, and 96 CID 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. 551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression this cam set designed for stock or mildly modified touring bikes. 551 cams are not recom- mended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle–4000rpm. 570: Designed for 88 to 103 CID 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". 583: 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:1500–5000rpm. 583 cams are not recommended for enginess having comression ratios greater than 10.1:1

585: Designed for 88 to 95 CID engines with compression ratios from 9.7:1 to 10.5:1 and 100 to 124 CID engines from 9:1 to 10:1 compression. Provides massive horsepower and torque increases starting at 3000rpm and holds steady all the way to redline. 3500-6000 rpm for 88"–103" engines and 2500–5500 for larger engines. 625: Cam set designed for 95" or larger engines with compression ratios between 10.0 and 10.75:1. 3000–6000 rpm. MR103: Designed as bolt-in cams for 103 CID engines with stock 9.7:1 compres- sion 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 form 2500–5500 rpm. Bolt-in. HP103: Designed as bolt in cams for engines with 103 and stock 9.7:1 compres- sion 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. 635 H.O.: High lift cam for modified engines with 106" or greater displace- ment and compression ratios between 10.0:1 and 11.0:1. Works well with stock, un-ported heads, but S&S CNC ported heads are recommended. Best power from 3000–6000 rpm. This is not a bolt-in cam set. High-lift springs and clearance checks are required. 640: Used in S&ST124 engines, this cammakes horsepower! Intended for engines of 95 CID or more w/compression ratios between 10.5:1 and 11.5:1. 3000-6000 rpm. 675 : A high lift monster, this cam set is designed for 120" or larger engines with at least 11:1 compression ratio. 4500–6500 rpm.

EO #D-355-14

SPECIFICATIONS OF S&S® CHAIN & GEAR DRIVE CAMSHAFTS FOR 1999-UP BIG TWINS Stock valve springs in 1999–’04 big twin models can handle cams with valve lifts as high as .515". Stock valve springs in 2005–up engines can accommodate valve lifts up to .590". NOTE

APPLICATION CROSS REFERENCE

Valve Timing (open/close)

Valve Duration

Centerline

Lift @ TDC

Cam Name

Bolt- In

Valve Lift

HD® Screamin’ Eagle®

Intake

Exhaust

Most Fitting

Intake Exhaust

Intake Exhaust Intake Exhaust

Andrews®

Open BTDC/ Close ABDC

Open BBDC/ Close ATDC

OES

2˚/34˚ 20°/36° 18˚/18˚ 20˚/38˚ 17°/19° 20˚/40˚

36˚/4˚

216˚ 236° 216˚ 238˚ 216° 240˚ 203˚ 255˚ 243° 226° 249° 265˚ 269˚ 245˚

220˚ 242° 237˚ 252˚ 238° 255˚ 262˚ 260˚ 276° 252° 251° 270˚ 275˚ 260˚

.475" .505" .509" .510" .550" .570" .583"

106˚

106˚ 106˚

.060" .185" .174" .187" .178" .187" .113" .189" .186" .172" 199" .228" .235" .186"

.060" .157" .140" .178" .170" .179" .206" .184" .284" .177" .206" .214" .205"

A-Grind

   

505C

47°/15° 46˚/11˚ 52˚/20˚ 41°/17° 55 ˚/20˚ 58˚/24˚

98˚ 90˚ 99˚ 91˚

509 510

107.5˚

106˚ 102˚

551**

SE-203/255 21H/26H Touring

570 583

100˚ 96.5˚

107.5˚

–

54H All Big Twin

5˚/18˚

107˚

SE-203/255 21H/26H Softail®/Dyna®

31H/32H/ 50H/55H/67H

585

20˚/45˚

60˚/20˚

.585" 102.5˚

110˚

.179" SE-211/251/257

All Big Twin

625 635

20˚/55˚

60˚/20˚

.625" 107.5˚

110˚

SE-258/260

60H All Big Twin

.635"

19.5°/43.5° 58.5°/37.5°

102° 104°

100.5°

MR103 HP103

13°/33° 20°/49° 25˚/60˚ 25˚/64˚

50°/22° 45°/26° 65˚/25˚ 70˚/25˚

.585"

104°

.575" 102.7° .640" 107.5˚

101.5°

640 675

110˚

SE-264

59H All Big Twin

.675" 109.5˚ 112.5˚

–

64H Race

*Note: Although several cam grinds were used in stock engines from 1999-’06, the timing specs of the 475G cams is most similar to cams used in 1999-’03 EFI engines. **551 cams are not recommended with compression ratio of 10:1 or higher.

All reference to HD® and Andrews® part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle’s products are original equipment parts or that they are equivalent to the corresponding HD® part number shown. Use of brand names such as Harley-Davidson® Sportster® are also for reference only.

180 Order 608-627-1497 S&S Late Models 1999–up