Guess ET for 318 ? With slicks ???
I wouldn't be afraid of the low gears. Optimal? maybe not, but the first 1/2 of the track is the hardest, and if you can hook, the low gears will help a bunch. How do I know? My mismatched Barracuda shifts at 5,000 rpms. flat, any higher it slows down. I have a 28"ish tire. 4.86's went 12.40 @ 103 and change. I tried 3.91's as everyone said I was way over geared. It went a best of 12.6. Mph increased, due to actually pulling on the top a bit, but it was definatley slower. 13.70's is my guess with the low gears.