The larger second-generation Camaro featured an all-new sleek body and improved suspension. The 1970 1/2 Camaro debuted as a 2+2 coupe; no convertible was offered and would not appear again until well into the third generation. Most of the engine and drivetrain components were carried over from 1969 with the exception of the 230 in³ (3.8 L) six cylinder — the base engine was now the 250 in³ (4.1 L) six-cylinder rated at 155 hp (116 kW). The top performing motor was a L-78 396 in³ (6.5 L) V8 rated at 375 hp (280 kW). Starting in 1970, the 396 in³ (6.5 L) nominal big block V8's actually displaced 402 in³ (6.6 L), yet Chevrolet chose to retain the 396 badging. Two 454 in³ (7.4 L) engines (the LS6 and LS7) were listed on early specification sheets but never made it into production. Besides the base model, buyers could select the "Rally Sport" option with a distinctive front nose and bumper, a "Super Sport" package, and the "Z-28 Special Performance Package" featuring a new high-performance 360 hp (268 kW) 350 in³ (5.7 L) V8.
Source: Wikipedia (original)