Well, I'm not sure why Hemmings publishes things like that. In the April '05 issue they had a Buyers Guide that talked about '65-'66 Chevy Impala. I couldn't believe what they wrote in the "Transmission" section of the article. They said "The other manual boxes included 2 four-speeds, one a normal "heavy-duty" version, and the strong but noisy "Rock Crusher" made by Muncie, better known as the M22, which was the only transmission available with the 427." The ONLY transmission available with the 427??!!!
I have no idea how or where they got that information, but it's flat out wrong. There were 2 427's (390hp, 425hp) available in 1966. If all the 427 full size cars came with M22's as Hemmings has claimed then there would have been 5,143 cars in 1966 with the M22 instead of the documented 2. There are documented full size L72 cars that came with M20's and M21's (they didn't mention M21's in the article). I would have expected more accurate information from Hemmings.
