S&S Sidewinder® 3 5/8" big bore kits have been a popular way to increase the displacement of shovel engines since 1977. Available in displacements from 88" to 103". Sidewinder kits are configured to order and optional parts are available. Stock cases and heads must be bored to accept 3 5/8" bore cylinders.
Features and Benefits
- Increase displacement and power
- High strength cast iron cylinders with increased cooling fin area
- Stock like appearance—durable black powdercoat finish
- Easy installation
- Long engine life, good dependability
Options
- Displacement 88", 93", 93" HC, 96", 98" and 103"
- Standard pushrod kit or S&S valve train conversion kit
- Cam selection
- Optional parts available—Cylinder heads, S&S retro conversion kit (pan style heads and upgraded valve train), and S&S valve train upgrade kit
| Complete S&S® Sidewinder® Kits For Shovelhead Engines |
| Displacement |
Stroke |
Piston Type |
CR
|
1966-’69 |
1970-’84 |
93”
|
4 1/2” |
Forged |
8.5:1 |
91-9127
|
91-9128
|
| 4 1/2” |
91-9127 |
91-9128 |
| 93” HC |
4 1/2” |
9.1:1
|
– |
91-9130 |
| 96" |
4 5/8” |
9.1:1 |
91-9133 |
91-9134 |
| 98" |
4 3/4” |
8.9:1
|
– |
91-9138 |
| 103” |
5” |
10.7:1
|
91-9139 |
91-9140 |
| CTO |
|
|
|
106-5835 |
| Not legal for sale or use on CA or EPA pollution controlled vehicles 1978 and later. |
