Why It Matters
The 1966 2+2 used one 421 family in standard four-barrel, optional Tri-Power, and optional high-output Tri-Power configurations.
Also Known As
1966 2+2 421338-hp 421356-hp 421376-hp 421 HO
Part profile
1966 Pontiac 421 engine assembly
engine assembly · Pontiac
Used On
2 linked car pages.
Series 25437 hardtop coupe or 25467 convertible
1966 Pontiac Catalina 2+2 421
254 2+2
26657 two-door pillarless hardtop coupe
1966 Pontiac Grand Prix
26657 two-door hardtop coupe