Reference Details
- Availability
- optional · 1966 Chevrolet Chevelle SS 396 L78
- Category
- performance · 1966 Chevrolet Chevelle SS 396 L78
- Code
- M21 · 1966 Chevrolet Chevelle SS 396 L78
- Confidence
- documented · 1966 Chevrolet Chevelle SS 396 L78
- Notes
- Listed as available with L79, L34, and L78 engines. · 1966 Chevrolet Chevelle SS 396 L78
- Availability
- optional · 1967 Chevrolet Impala SS427
- Category
- performance · 1967 Chevrolet Impala SS427
- Code
- M21 · 1967 Chevrolet Impala SS427
- Confidence
- reported · 1967 Chevrolet Impala SS427
- Notes
- Listed as an optional floor-shift close-ratio four-speed path. · 1967 Chevrolet Impala SS427