[Cliff8928]

1) The 3300 is a 90°V6 based off the 3800
2) The 3400 has only been made from 1996 to current and is a 3rd generation engine.
3) The 3.4 "Twin Dual Cam" in the old W-Bodies is DOHC and very different.
4) The Camaro 3.4 engine is actually a 1st generation engine with iron heads, and is labeled only as "3.4 SFI" as i remember.
5) The Chevy 60°V6 was introduced in 1980 (there was also an old-school 60°V6 from GMC in the 60s)