Flathead Power® cylinders are made of high strength engineering-grade grey cast iron with very high tensile strength and excellent wear resistance. Cylinders are finished with a durable semi-gloss black powdercoat finish. Very stock appearance, but with more cooling fin surface area and thicker sections in key areas. Available in 3 7/16" and 3 5/8" bore. Different length cylinders are also available.
Features and Benefits:
- High strength engineering-grade grey cast iron
- Excellent wear resistance
- Durable black or silver powdercoat finish
Flathead Power cylinders are now "configured to order,"which allows customers to order a set of cylinders only, a front or rear cylinder, or a set of cylinders fit with a set of S&S pistons of their choice. In addition, S&S offers machine shop services through the S&S remanufacturing program. New pistons can be fit to your existing cylinders for a reasonable charge.
| Typical Cylinder Dimensions for 1966–’84 Big Twins |
| Displacement |
Bore |
Cylinder Length |
Flywheel Diameter |
Spigot Length |
| Stock 74" |
3 7⁄16" |
5.330" |
8 1⁄2" |
|
| Stock 80" |
3 1⁄2" |
5.330" |
8 1⁄2" |
|
| 88" |
3 5⁄8" |
5.330" |
8 1⁄2" |
|
| 93" |
3 5⁄8" |
5.405" |
8 1⁄2" |
|
| 93" HC |
3 5⁄8" |
5.363" |
8 1⁄2" |
|
| 96" |
3 5⁄8" |
5.440" |
8 1⁄2" |
|
| 98" |
3 5⁄8" |
5.530" |
8 1/4" |
|
| 103" |
3 5⁄8" |
5.630" |
8 1/4" |
|
| Special |
Specify |
Specify |
Specify |
Specify |
NOTES: Cylinders for P-Series engines will not fit stock pan cylinder heads. They are machined with a stock shovel head bolt pattern. Cylinders for P-Series engines do not have an internal oil feed passage for top end oiling. Not compatible with stock pan cases or heads.
