Back in the late '80s I ran my bone stock worn out 318 4 door '69 Coronet to the tune of 16.35 to 16.38, it was consistent as can be and I won my bracket for my first trophy.
I went through 9 rounds! I just left it in drive and floored it on the last yellow, and i let it shift on it's own. Not really any tire spin (maybe a squeak), it had 2:76 gears in it.
This was all done in Spokane Washington, not sure of the elevation.