Reference Details
- Availability
- special order
- Category
- performance
- Code
- 410 hp
- Confidence
- documented
- Notes
- 12.0:1 factory-listed dual-four-barrel configuration; later lightweight histories report additional piston changes.
Option reference
410 hp High-compression dual-Carter Super Duty 421
performance · special_order
Cars With This Option
1 linked car page.
1963 Pontiac
1963 Pontiac Catalina Super Duty 421
Factory special-order competition program through early 1963