67z vs 93z

[JK98SS]

If it is a bone stock 93 it should run mid 13's to low 14's.
93 is the odd ball year because it still had a "chip" in the computer, had speed density air management and 2 versions of the manual transmission. A friend has one and it came with the optional 6 speed that came with 2.73's. Commonly the manual cars came with 3.42's. Auto cars with Z rated tires and performance axle came with 3.23 and the others got 2.73.

I had a 95 Z28 that ran 13.6 with the 2.73's and just a flowmaster muffler and an SLP Cold air kit.

But of course your elevation and weather will have a large impact on the ET.

[JK98SS]

My friend ran his 93 Z with 140,000 miles, 2.73 geared 6 speed with headers, no cats and an SLP TOTL (two on the left) Exhaust that went 13.0 on street tires. Keep in mind this was cool spring air at Gateway International.