Gear can definitely have an effect. I have seen firsthand a 112-114 Lsa cam on a motor without a lot of compression knock a good bit of 60 foot out of a car, compared to a narrower cam.
Might not be the case on the OP'car..

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17