Thread: Best gear for 1/4 mile

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What is your opinions on the best 1/4 mile gear. I know it depends on tire size, rpm and 1/4 mile speed, but the majority of people are preaching 4.56 but they don't realize how to come up with the gear they need they just think lower is better.

There is no magic good for all ratio. If youre still in your power curve on your engine,you are still accelerating,go past it and you are slowing down.

if i couldn't have but one gear, i'd go with the 4:10 gear. for the adv. st. car.

halftanked is correct. There is no one gear ratio for all cars, but I've always geared so the car was almost or at the maximum rpms of the powerband right at the lights. You want the car to still be pulling rather than running out of steam.

With our 351 Cleveland, we geared 4:88's with a 29 inch tire. With my altered, I had 5;14's, with a 30 inch tire. You have to run the car and see what it is doing at the finish line.

Don

As an example a 71 nova with 700hp, 6500rpm chip, 350 trans, 4.11 gear and 28 inch tire. At the quarter he is at 6500 rpm. People (that don't know) say he needs some 4.56 gears, but that would slow him from 132mph (or so) to around 119 mph. But i don't think it will be any faster would it?

Originally posted by chevydrivin
As an example a 71 nova with 700hp, 6500rpm chip, 350 trans, 4.11 gear and 28 inch tire. At the quarter he is at 6500 rpm. People (that don't know) say he needs some 4.56 gears, but that would slow him from 132mph (or so) to around 119 mph. But i don't think it will be any faster would it?

if hes got 700 HP and running around 120 mph, he needs more than another gear.

Originally posted by lt1s10
if hes got 700 HP and running around 120 mph, he needs more than another gear.

What do you mean????????

120 mph is not very fast for that much HP.

Mike, you're a day late and a dollar short buddy.....he's running 132 mph now and if he changed to a shorter gear while running the same rpm, he'd slow down to 119.

In order to go quicker/faster with a stiffer gear, he'd have to change the engine rpm's through the lights.

Originally posted by lt1s10
120 mph is not very fast for that much HP.

Horse Power has nothing to do with speed! In this situation.

Originally posted by chevydrivin
Horse Power has nothing to do with speed!

Well.....uh......yeah it does. Take the same car to the track with a 200 hp motor and see how fast it goes.

Originally posted by techinspector1
Well.....uh......yeah it does. Take the same car to the track with a 200 hp motor and see how fast it goes.

Sorry tech as i was editing my mess you replied. My edit was in this situation meaning same HP.

how many 700 hp cars, that run in the 7 sec. 1/4 mile with a speed of 120 mph. so i'll stick by my statement. "if hes got 700 HP and running around 120 mph, he needs more than another gear."

Originally posted by chevydrivin
As an example a 71 nova with 700hp, 6500rpm chip, 350 trans, 4.11 gear and 28 inch tire. At the quarter he is at 6500 rpm. People (that don't know) say he needs some 4.56 gears, but that would slow him from 132mph (or so) to around 119 mph. But i don't think it will be any faster would it?

MPH doesn't win a drag race, ET does. I try to gear mine so that its about 200 RPM over the peak torque and horsepower numbers. If the peaks are beginning to descend at 6300 RPM, no reason to run it to 7,000.

Originally posted by lt1s10
how many 700 hp cars, that run in the 7 sec. 1/4 mile with a speed of 120 mph. so i'll stick by my statement. "if hes got 700 HP and running around 120 mph, he needs more than another gear."

If your going to stick by your statment then help me out, what do you think the car needs. As I asked earlier "what do you mean"