Reference Details
- Availability
- optional
- Category
- performance
- Code
- 13.5:1
- Confidence
- documented
- Notes
- Optional at extra cost according to the factory bulletin.
Option reference
13.5:1 425-hp high-compression engine
performance · optional
Cars With This Option
1 linked car page.
1963 Plymouth
1963 Plymouth Savoy Max Wedge
Plymouth called it Super Stock 426; Max Wedge is the familiar enthusiast name.