Camshafts
Camshaft Kit - 509G Gear Drive - Twin Cam
Brand: S&S CYCLE
SKU: P1630200443613
$948.95
$811.13
Taxes and shipping calculated at checkout.
509G Gear Drive Camshaft Kit
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Product Details
Highlights
- Bolt in cams for 88 CID engines with stock compression ratios.
- Increases valve timing accuracy by eliminating timing chain lash and loosely fit stock chain drive.
- Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; resulting in higher cam lifts that are possible with the gear kit.
- Material must be removed from inner surface of the stock gear cover to install.
- S&S recommends that adjustable pushrod/cover kit to be used.
- Cam bearings and gaskets must be replaced when installing new cams.
- Lowers loft allows cams to be bolted into 96"-106" ' engines with stock valve springs.
- Strongest from 1000-4500 rpm.
- 180 psi cranking compression; no need for compression releases.
- A hydraulic press and other professional level tools are required to install.
- Kit includes cams, inner gears, outer drive gears, inner and outer bearings, gaskets and instructions.
- Made in the USA.
- Installer must check coil bind, valve to valve clearance and valve to piston clearance.
- Due to the inherent characteristics of gear drives, you may experience more valve train noise.
- Not for ' Dyna.
The 509 Touring Cam is designed as a bolt-in, high torque cam for 1999-' models, except 2006 HD Dyna. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. The S&S 551 cams for Harley-Davidson touring bikes are a favorite with late model bagger riders. The problem is that, due to the.550" lift, the 551 cams can't be installed in early (1999-'04) Twin Cam 88 engines without a set of high lift valve springs. That means that the heads have to come off just to install a cam. That's a lot of work and expense! S&S has come up with new 509 bolt-in torque cams that work with stock valve springs in 1999-'04 engines. 509 cams are great for low and midrange torque, but the lower lift allows them to be bolted into stock 1999-'04 engines with stock valve springs. That saves time and money on the installation. Type: 509G; Timing Open: Intake 18/Exhaust 46; Timing Closed: Intake 18/Exhaust 11; Duration at 0.053: Intake 216/Exhaust 237; Valve Lift: Intake 0.509"/Exhaust 0.509"; Lift at TDC: Intake 0.174"/Exhaust 0.140".
Specifications
| Application | Exhaust / Intake |
|---|---|
| Exhaust Close Imperial | 11 |
| Exhaust Duration Imperial | 237 |
| Exhaust Lift at TDC Imperial | 0.140" |
| Exhaust Lift Imperial | 0.509" |
| Exhaust Lobe Centerline Imperial | 107.5 |
| Exhaust Open Imperial | 46 |
| Grind | 509 Series |
| Intake Close Imperial | 18 |
| Intake Duration Imperial | 216 |
| Intake Lift at TDC Imperial | 0.174" |
| Intake Lift Imperial | 0.509" |
| Intake Lobe Centerline Imperial | 90 |
| Intake Open Imperial | 18 |
| Riding Style | Street |
| Type | Gear |
| Units | Kit |
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