So i have 3:55 gears now if i switched to 4:10 gears would just switching gears give me a quicker quarter mile time? someone told me i would cut off a half second. Is that true?
A half second is really generous. With your mods and current gear set you'll likely pick up .1-.2-tenths to be frank....and that's assuming you're able to put the power to the pavement. Remember, with 4.10's it's going to be harder to control wheel spin. Your mileage is really going to take a nose dive too.
If you drive this car primarily on the street, I'd advise against the 4.10's. Some guys will tell you otherwise, but my own personal prefference is less gear, not more. If you used this car more at the track and were going from the stock 2.73's, then I'd say consider it, but you've already got 3.55's. The benefit doesn't out weight the cost IMO. If it were me, I'd concentrate on adding more power instead of more gear.
See what you think after your GT40 install. The additional power may be enough that you won't feel gears necessary anymore. That being said...if you've got enough money to swap your gears, then you might be better off sinking it into a better set of heads instead of the iron GT40's you've got. Just food for thought.
okay cool yeah i will just keep the gears i have lol. I am going to get the explorer upper and lower intake and the heads with upgraded valve springs, and a 65mm throttle body and see what the track difference is. I am running 14.2 right now with the street tires.
thank you
I swapped from 3.55s to 4.10s in an older project of mine. I changed so many other things that the drop in quarter mile times cannot be attributed to anything in particular, though. I went from 13.5s to a best of 11.96, but I also picked up 50 rwhp at the same time.
That said, I believe that with sticky tires, you would see a very nice improvement in your 1/4 mile times, but probably not half a second. 4.10s are fine for the street as long as you don't spend a huge amount of time on the highway, but honestly a lot of 4cyl imports have terrible final drive ratios, too. They don't have a gear as tall as we do in 5th, either. My '95 BMW 318i is running at 3000 RPM at just 70 mph. You won't be running that high, even after the gear swap to 4.10s.
Back to the drag racing part, if you're looking for improvement, sticky tires should come first. The 4.10s will only help you in the first part of the track. If you just blow off the tires on the launch, then those gears aren't doing anything for you.
If you have an O/D transmission, and do not drive much on the open highway (interstate), then 4.10 gears will actually help your fuel mileage. Just a heads up. The engine doesn't work as hard in traffic when it has more leverage on the car, which saves fuel.