66/67 Chevelle COPO?

[67since67]

No documented '66 or '67 factory 427 Chevelles. Dealer swaps, yes, many.
Member here Jeff H has researched this extensively.

In '66 and '67, all 396 cars were 138 VIN Super Sport models, with exception:

1. 136 VIN El Camino. 396 (L35, L34, and L78) was an engine option, same as a 327. In '68 the SS396 El Camino became a trim level.

2. Very rare Oshawa built Canadian 136 VIN "Malibu SS" (or Beaumont SD) where L34 396 was an engine option, and stamped L34 on the TT. No L35 or L78 Malibu SS, or Beaumont SD.

By November of '66 ('67 model year) US Canadian trade situations changed and the Canadian market got the SS396.