I went 16.7 at Bandimere with my Barracuda back in the early 90's with 3.23's and a fairly stock 318....MAN that thing was slow, but I thought it was fast back then, lol!
My first car was a 74 Dart four door, 225 slant six and 904. It ran mid 16s first and only time I had it on the track. Only way I could shave off a tenth was to inflate the tires to the max lol
Believe it had a gear ratio below 3, whatever came in the 7 1/4 years. 2.71?