Classic Car Archive Specs, Facts, & History
The 1963 Grand Prix received revised sheet metal shared with other full-size Pontiacs, but with its own squared-off roofline with a concave rear window. Also new was a split grille with vertical headlights and round parking lights and "hidden" taillights out back.
Engine options changed this year which included a new 330 hp 389 Tri-Power and three versions of the larger 421ci. The 303hp/389ci remained standard equipment.
Consumers seemed to like the changes as the Grand Prix more than doubled its previous year’s production.
|Engine||0 to 60 MPH||Quarter Mile||Source|
|421/370||6.6 sec||15.1 sec @ 94 mph||Motor Trend|
|389 V8||389ci||1x2bbl/1x4bbl||230hp/303hp||425 lb-ft|
|389 V8||389ci||3x2bbl||318 hp||430 lb-ft|
|421 V8||421ci||1x4bbl||353 hp||455 lb-ft|
|421 HO||421ci||3x2bbl||370 hp||460 lb-ft|
Ask Grand Prix expert Rick McLaughlin