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What gears to get? PLZ HELP!

One more thing.. as far as driveability and offroading it seems most are going with somethin around 456. What about for acceleration and faster 1/4 mile what would I go with?? I know sometimes if you gear the truck too low it will have alot of power but you dont get into a good powerband for acceleration and it actually could make you slower. I good example is running in 4 low, you take off fast with power but as you get going the taller gear of high would have won the race once it got into powerband around 35-40 mph

What would I get if I wanted it to be fastest in a 1/4 mile situation? I know if you go too low it will be out of powerband and just be shifting too much to be fast.

I have experienced in cars sometimes when u have a upgraded engine like I have with my 350 (cams, 3 inch exhasut exc.) you want to go with taller gears or stock rather then shorter gears where your shifting alot and not getting much besides torq and a quick 0-35 mph jump

I know it would have to do with the powerband of the motor and racing engines that only make power at high rpm would want low gears and stock engines that make max power around 4 grand would want tallers gears
 
PorterzCustomz said:
One more thing.. as far as driveability and offroading it seems most are going with somethin around 456. What about for acceleration and faster 1/4 mile what would I go with?? I know sometimes if you gear the truck too low it will have alot of power but you dont get into a good powerband for acceleration and it actually could make you slower. I good example is running in 4 low, you take off fast with power but as you get going the taller gear of high would have won the race once it got into powerband around 35-40 mph


What would I get if I wanted it to be fastest in a 1/4 mile situation? I know if you go too low it will be out of powerband and just be shifting too much to be fast.

I have experienced in cars sometimes when u have a upgraded engine like I have with my 350 (cams, 3 inch exhasut exc.) you want to go with taller gears or stock rather then shorter gears where your shifting alot and not getting much besides torq and a quick 0-35 mph jump
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My Buddy has a k5 With 3/4 ton's.
350 TBI cam , intake ,roller rocker's , and header's . His truck with 3.73's on 35's sucked. He changed out the gear's for 4.56 and it is noticably a slight upgrade. It pick's up pretty quick , and is good to drive , but it also doe's have more noticable torque.
 
From 3.73 to 4.56 only a slight upgrade!? I dont know how to find out what gears im running now but I know its a 1990 with OD and 0-45 is REALLY bad with 35's untill it gets goin then its not too bad when you get on it from a roll
 
It is a slight upgrade At this
3.73 With 31's Factory
4.56 with 35's is just above where it would be equivilent to stock.

In otherword's it is like being back at where you should be with a little extra.
Apparently you really have no understanding of gearing.
 
PorterzCustomz said:
From 3.73 to 4.56 only a slight upgrade!? I dont know how to find out what gears im running now but I know its a 1990 with OD and 0-45 is REALLY bad with 35's untill it gets goin then its not too bad when you get on it from a roll
Click to expand...
Inside the glove box should be a sticker with a bunch of 3 character codes, if it hasn't been lost in the last 17 years. The axle code will be in there and should start with a G (i.e. GT4 is a 3.73:1 axle ratio). You can check here to decipher the code. Assuming the axles are stock this will tell you what you started with.

Then, to one of your original questions, you can determine what your new gear ratio should be by dividing the new tire diameter by the old tire diameter and multiplying that by the old gear ratio. For example, if you had 31s and 3.73s originally and went up to a 35" tire you would divide 35 by 31 and multiply by 3.73 ( 35/31 * 3.73) = 4.21.

You won't find a 4.21 gear set so you can either go down to 4.10 or up to 4.56. As you can see most people are recommending the 4.56s, especially since you have OD. This should put you close to where you were stock with a little more grunt to help get the bigger tires rolling.
 
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