A 4.10:1 gear will have a softer hit on the tire compared to a 3.73:1. My car has a P/D S/C with a 4.10:1 gear and used to have a 3.73:1 gear. It is easier to get the car to hook out of the hole with the 4.10:1 gear. It sounds counter intuitive, but it works. I even used the 4.10:1 gear with a 26" tire with no issues. Just need an engine that can carry the rpm with that set up. I am going to go to a 4.30 gear because my car is a 1/8 mile car. With 3.73 gears and a 26" tire I had no issues running the car all the out through the 1/4 mile. With 4.10's and a 26" tire I can get to 1,000 feet before I run out of rpm. With the 28" tire and 4.10's it allows me to run all the way out in the 1/4. Going to a 4.30 gear or so should optimize my 1/8 mile package but still let me run it out to a 1,000 foot or so. If I let the car go for the full 1/4 as it now sits with the 4.10 gears I would blow right through the 8.5 chassis cert, and going to a 25.5 cert would set me back $4-5K+or so. I don't want that expense right now so I keep it contained to 1/8 mile stuff.
1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C
26 X 8.5 Hoosier
Best 1/4 mile time 8.623 @ 159.82 mph with a 1.34 60' (5.57 1/8th at 128)
Best 1/8 mile time 5.339 @ 133.46 mph with a 1.29 60'
08' Bullitt #4097 N/A 340ish RWHP <<<<<FOR SALE!