1970 was a very interesting time in Camaro history. At the height of the Muscle Car Era, production problems delayed the 70 model introduction such that GM actually advertised the 69 Model as part of there 70 Muscle Car line up.
and the 70 Model as their 70½ model such as
70 1/2 Chevrolet Camaro Z28 Coupe
There is no denying that the VIN determined the Year of production but there where many cases where 69 models were registered as a 70 by the MVR. By End of January Dealers where selling both Models as NEW Cars in 1970 which is unique in Camaro History.
Other then a New Body Design in 70 and the most powerful SBC ever offered to the public, both the 69 and 70 Models have common Drive Train, Electrics and Steering Column. Also the 69 and 70 Models probably share the most Popularity among Camaro enthusiasts.
The 70Z was no doubt more powerful and handled better then the 69 but there is no denying the popular aesthetic design of the 69, especially with the RS package, an option on the 2nd Gen that didn’t necessarily enhance the looks over the STD Grill according to many. After GM dropped the 1st Gen, Chrysler virtually traced the lines of the 1st Gen Camaro into their Cuda and Challengers models and did it very successively I might add. My 340 Mag RS Challenger was lighter, faster and with torsion bar suspension out handled the SBC Camaro and was $1,500 cheaper; unfortunately, their bodies rusted like Coke Cans. In retrospect, unlike Ford or Chrysler, GM in 1970 did not option; Six Pac’s, Shakers, Factory Headers, Dual Exhausts or Plush Interiors wrapped inside a tinfoil skin to promote their Muscle Car; instead, GM marketed a package which simply included the STRONGEST and BEST ENGINEERED BODY in the Industry complimented by a line of Performance Engines with design features that allowed you to Bolt On the Required Options and WIN whatever Race Event you participated in. If you could not do it, oriented dealers like YENKO, BALDWIN, NICKEY …etc would do this for you.
A buddy owned a 70 302 BOSS - Beautiful car man, but he always had problems keeping the clutch in her. Seems the Fire Wall would flex with them Hi-RPM launches that the Ford engine required causing the linkage to vibrate hence blowing the clutch and if I recall he also had issues with the shock towers.
Because of the larger production #'s and after market parts there are considerably more 69's restored then the 70 to 73 Models. The 70 model has many parts that are one year specific and very difficult to restore to original specifications. It is very rare to find a #'s matching 70Z today as there were only 8733 built with that infamous 360Hp solid flat tappet 350 LT1 and less the 2600 with the Muncie and 4:10 gears. Mine was one of these but the original engine was lost long ago so I installed a 600Hp MK IV Solid Roller power plant and can't say if I miss the LT1 ;o)
Believe me you are the center of Camaro enthusiast’s attention; owning either a 69 or a 70 Camaro and there will always be that sense of friendly reviler between the 2 and of course the 70½ topic.