Reference Details
- Availability
- optional
- Category
- performance
- Code
- 12.5:1
- Confidence
- documented
- Notes
- Paired with standard 4.56 Sure-Grip.
Option reference
12.5:1 425-hp high-compression engine
performance · optional
Cars With This Option
1 linked car page.
1964 Plymouth
1964 Plymouth Savoy Max Wedge
Super Stock 426-III, Plymouth's final Max Wedge package.