I know this is about a Stang but please bear with me. Look at my mods in the sig. I am planning gears soon. I am wondering how many tenths and mph, 3.73, 3.90, 4.10, and 4.30 gears will give me in the 1/4 mile with my current mods? 3.73 gears are great for top speed and a daily driver. 4.30 gears are best for the dragstrip. I was just wondering what the difference would be between all these gear ratios at the strip. Anybody know? Thanks in advance.

 

I think they would give you about a tenth for each step up...except for the initial 3.73's, they could take off two tenths if your ratios are already 2.73s or 3.08s

It just depends on what kind of cam you have in the car.....a cammed car would better benefit from the 4.10s and 4.30s, but if its close to stock then 3.73s or 3.90s would be better, especially if its a daily driver....

I dont have any firsthand experience with Mustangs but this is what I've noticed....

 

I really hate to be a hard blank but come on for cripes sake. This is the LS1 ENGINE tech forum.