And I think you could order a 4 on the floor as well........

Nasty brute muscle car!!!

Yep, a 4-speed was actually standard with the big block with a Powerglide 2-speed automatic optional. The column-shifted 3-speed that was standard on 6 cylinder and small block 8's wasn't available with the big block. And, yes, the base engine in the '66 Impala SS was the 250 c.i. straight-6! (actually, the 6 was the standard engine in the Impala SS all the way from 1962 through 1966, as I recall). I believe the 327 became standard in the 1967 Impala SS while the big block 427 cars were simply badged as "SS-427"s, with no Impala badging on them at all. This held true for 1968 as well. For the Impala SS's final year (until the car made it's return on the 90's), 1969, the 427 was the only engine available in the Impala SS (no longer just called the SS-427)

(Make mine a blue '69 SS-427 Sport Coupe with the 4-on-the-floor. In 1969 the SS was available as both the semi-fastback Sport Coupe body and the more formal-looking Custom Coupe body, as well as the convertible)

Sweet info.......Old Cars Weekly just had an article about the Impala, which is being killed off again as US car makers do not want to make sedans anymore.

We think alike, Impala-wise. The '69 Impy was the best looking Impala ever made, imo.