Why It Matters
Three Rochester two-barrels supplied the optional 356-hp and 376-hp 421 configurations.
Also Known As
421 three-two-barrel421 3x2421 HO Tri-Power
Part profile
1966 Pontiac 421 Tri-Power induction
carburetor · 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