Doing some digging, I found this information published online for the 69 model year.
Z28
0-60 mph, sec: 7.4
1/4 mile, sec @ mph: 15.12 @ 94.8
SS 396/375
0-60 mph, sec: 6.8
1/4 mile, sec. @ mph: 14.7 @ 98.7
ZL1
0-60 mph, sec: 5.4
1/4 mile, sec. @ mph: 13.5 @ 105
Then I found this info from Popular Hot rod magazine when they tested both cars. I have seen numbers all over the board for all cars, depending on the magazine that did the testing.
Camaro SS396 396ci/375hp n/a 14.5 sec @ 100.6 mph PopularHot Rod
Camaro Z/28 302ci/290hp n/a 14.7 sec @ 95.9 mph PopularHot Rod
Not sure how valid any of this is as I've also seen one magazine report the 87 IROC-Z with a 350 run 15.3 @ 98, while the 305 ran 14.9 @ 95 and then another magazine will show the 350 at 15.7 @ 96, with one more magazine showing the car at 14.4!!!
