Description
If you’re building a big-displacement Harley engine with serious cylinder bore sizes, stock crankcases simply won’t cut it. The S&S Special Application Crankcase relocates critical internal passages to handle the demands of large-bore, high-RPM applications while dramatically improving oil scavenging and crankcase ventilation. This is precision engineering designed for builders who refuse to compromise on reliability when pushing displacement limits.
Key Technical Features:
- Cam chest offset .250″
- Accommodates large bore cylinders
- Relocated oil pick-up
- Reduces high-RPM carryover
- Accepts stock 92-99 filter assembly
- Ported breather passageway
- Machined breather window
- Minimal ventilation restriction
- Dual breather compatible
- Rated for 5″ strokes
- CPS sensor provisions
- EFI-ready machining
- S&S IST Ignition compatible
- VFI Fuel Injection ready
- Includes CPS plug kit
- Manufacturer Part 31-0047






