how many 427 66 Impalas were made

621,800 made.

there were only about 50 made with a 427, the 400 turbo doesn't sound right they only came with manual 4 speeds. you would have to check the engine code that will identify the tranny .

Do you know how to search the web? Where do you think most of these answers come from? We don't have all this trivial stuff memorized. Unless the responder has that car people are asking for and needs that info, they will forget also. Look it up.

Do you know how many Lemonwood yellow 1966 Impala convertibles with a white top and with green/aqua interior where made? I have one

They made 3,284 427 engines. They went in various cars, trucks and station wagons. Nobody knows the exact number of 427 cars made. I have an original 427, Th 400 car with a bench seat. Frame off complete restoration everything done. Almost 100% New Old Stock bright work.

trip65 is wrong. Many had the TH400 trans. 4 speeds were rare.

My brother had a red with black vinyl top 66 Super Sport with the 427 / 390 L72 and the Turbo 400 trans. It had black interior with buckets with sculpted headrests, console with gauges, power windows, comfortron air and upgraded suspension with larger sway bars. He bought it for $500 in 1976 in Indianapolis, Indiana. An obsessed guy stopped by every few months for years trying to buy it, but my brother never sold it. He told us that less than a few hundred were made with a 427 and that of the 10 ever registered in Indiana, only 5 we're still registered in the state as of 1977. But even knowing that my brother didn't take care of it. By 1981 it was rusting out, so my idiot brother took the engine out and put it in a blue 1972 Chevelle. He then let people pay to swing a sledge hammer at it for money before it was sent to the crusher. It seems this kind of stupidity ran in the family because my dad sold his 1950 Mercury for $18 somewhere around 1960. The guy came back 3 days later to show him how good it ran after new plugs were installed. Sadly, this is all true.

Correction, to the above, it was the L36 with 390 hp, not the Corvette L72 with 425 ho