Camshafts
S&S CYCLE Camshaft - Easy Start - 635 H. O. Gear Drive - Twin Cam '99-'06 (except '06 Dyna)
Brand: S&S CYCLE
SKU: P1353629862405
$1,070.95
$913.90
Taxes and shipping calculated at checkout.
635 H. O. Easy Start Camshaft Kit
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Product Details
Highlights
- Allows for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance.
- High lift camshaft for modified engines with 106" or greater displacement and compression ratios between 10.0:1 and 11.0:1.
- Best power from 3000 rpm - 6000 rpm.
- Includes camshafts, 4-gear set, gearcover gasket, bearings, retaining ring, o-ring, threat lock and instructions.
- Made in the USA.
- Not bolt-in.
- Not for models with OEM compression releases.
- Works well with stock, un-ported heads, but S&S CNC ported heads are recommended.
- High-lift valve springs, adjustable pushrods, and clearance checks are required.
- Due to the inherent characterics of gear drives, there may be more valve train noise.
S&S 635GE Easy Start gear drive camshaft kit for 1999-' HD Big Twins except ' HD Dyna are recommended for modifed engines with larger displacement and higher compression. More torque and horsepower than bolt in cams can deliver. Requires high lift springs in all applications. An S&S oil pump and cam support plate, along with a stock 2007 and later style hydraulic cam chain tensioner upgrade is highly recommended for chain drive cams.
Specifications
| Application | Exhaust / Intake |
|---|---|
| Exhaust Close Imperial | 37.5 |
| Exhaust Duration Imperial | 276 |
| Exhaust Lift at TDC Imperial | 0.284" |
| Exhaust Lift Imperial | 0.635" |
| Exhaust Lobe Centerline Imperial | 100.5 |
| Exhaust Open Imperial | 58.5 |
| Grind | 635 H.O. |
| Intake Close Imperial | 43.5 |
| Intake Duration Imperial | 243 |
| Intake Lift at TDC Imperial | 0.186" |
| Intake Lift Imperial | 0.635" |
| Intake Lobe Centerline Imperial | 102 |
| Intake Open Imperial | 19.5 |
| Model | Easy Start |
| Riding Style | Street |
| Type | Gear |
| Units | Kit |
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