Description
If you’re building a Twin Cam engine that demands reliable airflow and the flexibility to upgrade later, S&S Cycle cylinder heads deliver the port flow you need without forcing a complete rebuild down the road. These fully assembled heads accept OEM intake manifolds while offering genuine performance gains—whether you’re running a stock 88-incher or pushing a 103+ displacement motor with high-compression pistons. Built in the USA and engineered for precision, they’re the foundation of a serious power plant.
- Fully assembled, ready to install
- High port flow design
- 79cc chambers (stock 88–103″ motors)
- 89cc chambers (103″+ or high-compression)
- 79cc: 1.940″ intake / 1.575″ exhaust valves
- 89cc: 2.000″ intake / 1.605″ exhaust valves
- Springs rated .640″ valve lift
- Machined for compression releases
- Accepts OEM intake manifolds
- Compression ratios vary by application
- Includes four long headbolts
- Reuse four OEM long bolts
- Requires S&S rocker boxes (if using S&S compression releases)
- Rocker arm components not included
- Gaskets not included
- Not compatible with Twin Cooled
- Made in USA
- MPN: 106-3233
