Joe's point about the spark plugs is valid. I think the stock plug is/was an AC Delco R45. I had a '72 Monte Carlo and that seems to be stuck in my brain.
Lot's of people hear the word "hotter plug" and think it means better performance when in fact all it does is dissipate heat more slowly. They're generally used to prevent fouling.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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