The Speedmaster Ford SB 289/302 Windsor Adjustable 5/16 Stud Mount 1.6 Aluminum Rocker Arms Set is a precision-engineered component for small-block Ford engine builds and rebuilds. This complete rocker arm set features 1.6 ratio aluminum construction with adjustable design and 5/16 inch stud mounting compatibility, making it compatible with classic Windsor engine platforms commonly found in muscle cars, street rods, and performance applications.
Constructed from lightweight aluminum, these rocker arms are engineered to deliver reliable valve actuation while reducing reciprocating mass—a key advantage for engine efficiency and durability. The adjustable design allows tuners and builders to dial in optimal valve lash settings during engine assembly or maintenance. The black finish provides both aesthetic appeal and corrosion resistance. This set is ideal for engine builders restoring original Windsor powerplants or upgrading to modern adjustable rocker arm geometry for improved performance and longevity.
Key Features & Benefits
- 1.6 Ratio Design: Engineered for Ford SB 289/302 Windsor small-block engines with proven valve actuation geometry.
- Adjustable Rocker Arms: Allow precise valve lash adjustment during engine assembly and tuning.
- 5/16 Stud Mount: Direct bolt-on fitment to compatible Windsor engine block pedestals.
- Aluminum Construction: Lightweight material reduces reciprocating mass for improved engine efficiency.
- Black Finish: Provides corrosion resistance and professional engine bay appearance.
Specifications
| Brand | Speedmaster |
| MPN | PCE261.1133.03 |
| Engine Fitment | Ford SB 289/302 Windsor |
| Rocker Arm Ratio | 1.6 |
| Mount Type | 5/16 Stud Mount |
| Material | Aluminum |
| Color | Black |
| Type | Adjustable Rocker Arms Set |
Ideal Applications
- Engine rebuilds and restoration of classic Ford Windsor small-block engines
- Street rod and muscle car engine upgrades
- Performance tuning and valve lash optimization
- Original equipment replacement for 289 and 302 cubic inch Ford engines