Reference Details
- Availability
- optional
- Category
- performance
- Code
- G80
- Confidence
- reported
- Notes
- Reviewed SS454 resource lists 2.56 as the standard 1970 SS ratio and 3.31 as a 1971 standard context; verify individual cars with paperwork.
Option reference
performance · optional
1 linked car page.
1970 Chevrolet
Factory Chevrolet RPO Z20 SS 454 package