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Old 11-05-2012, 12:50 PM
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2003 Chevrolet s-10

I want to get better gas mileage with my s-10 and it has a 4:10 gear ration manual trans and runs 3000rpm's at 70 mph. What would be a safe ratio to drop too without losing too much power for hills on the highway?

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Old 11-05-2012, 02:15 PM
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Do you have the 4 speed or 5 speed transmission? Is it a 4 cylinder? Is it 4 wheel drive? What size are the tires? The 3.42 is pretty popular, but might not work with what you have.
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Old 11-05-2012, 03:56 PM
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2003 s-10

It is a 2,2 4 cly with a 5 speed manual trans
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Old 11-05-2012, 05:24 PM
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4 wheel drive or 2 wheel drive? What size are the tires? What do you use the truck for?
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Old 11-06-2012, 01:57 PM
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Quote:
Originally Posted by wildwind3962 View Post
It is a 2,2 4 cly with a 5 speed manual trans
It is a 5 speed trans 2.2 4cly with 15" tires
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Old 11-06-2012, 01:58 PM
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Quote:
Originally Posted by big gear head View Post
Do you have the 4 speed or 5 speed transmission? Is it a 4 cylinder? Is it 4 wheel drive? What size are the tires? The 3.42 is pretty popular, but might not work with what you have.
It is the 2 wd 5 speed manual trans with 15" tires and the 2.2 4 cly
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Old 11-06-2012, 01:58 PM
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Quote:
Originally Posted by wildwind3962 View Post
It is a 2,2 4 cly with a 5 speed manual trans

It is the 2 wd 5 speed manual trans with 15" tires
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Old 11-06-2012, 02:18 PM
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2003 s-10

This site is very hard too figure out how to navigate. Can someone email me their professional opinion to W******** *****AHOO.COM I have a 2003 s-10 extended cab with a 2.2 4 cly manual shift with a 4:10 rear end. Can I put a 3:73 in without losing too much top end and will I gain on some gas mileage. It runs 2500 rpm's at 55 mph and I get about 26 mpg. At 70 mph it runs 3000 rpm's and I get just over 22 mpg.

Last edited by Crosley; 11-06-2012 at 05:39 PM. Reason: bad idea posting email address on open forum
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Old 11-06-2012, 02:29 PM
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Your in the right section someone should come along soon to help you out with this. and as far as top end , IMHO with the manual trans with the O/D it should be fine with a set of 3.73 gears. JMO



Cole
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Old 11-06-2012, 03:03 PM
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Even a drop to a 3.73 gear will kill your power. THat 2.2 and 5 speed and 4.10 gear are made to work with that little motor. Try the poor man's overdrive. Install some taller tires and see if you like the power loss. You might even get less mileage with 3.73's.
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Old 11-06-2012, 03:08 PM
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What size tires? 235/70/15 or somethign else? Tire height has a lot to do with your gear ratio choice. You have to consider everything when selecting a gear ratio. Tire size, engine size, camshaft profile, headder size, carb size, transmission gear ratios and stall speed (automatic), driving style, use of the vehicle and several others. You can't just choose a gear ratio without having all of the needed information.

If you are going to use the truck for highway driving and not hauling anything then you can use ssomething in the 3.08 or 2.73 range and probably be all right. If you are going to haul stuff or pull a trailer at any time then you need something more in line with what you have now. If you are running short tires then you can use a 3.42 or 3.73, but if you have tall tires then then you might need to keep what you have now. I know that headder size and camshaft probably don't have much to do with your situation, but you still haven't given enough information to help pick a gear ratio that will work for you.
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Old 11-06-2012, 03:11 PM
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Why did you start another thread with the same question?
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Old 11-06-2012, 03:36 PM
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Quote:
Originally Posted by RWENUTS View Post
THat 2.2 and 5 speed and 4.10 gear are made to work with that little motor. Try the poor man's overdrive. Install some taller tires and see if you like the power loss
I should have re-read your post.
I do have to agree with RWENUTS, the 3.73s will work but not without a powerloss at highway speeds/and probably take off,and i'm pretty sure your gas millage will suffer from the extra lugging it will be doing from the change from 4.10s to 3.73s. JMO why are you wanting to change to 3.73s anyway ?



Cole
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Old 11-06-2012, 03:43 PM
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I went and read your other thread on this and i say try the taller tires first. But if i were you i would leave it like it is your not going to save on gas by doing this swap IMHO, Try the tire change first if the only reason for the swap is gas mileage. JMO


Cole
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Old 11-06-2012, 05:47 PM
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the tire size is 205 75/15 and I use it mostly for driving in and around town I live rural but hit the highway quite a bit. The exhaust is standard manifold no headers and I don't drive crazy. I think that the idea probably will cost more than it is worth being I will also have to flash the computer. Just thought by trying to change the rpm's I could save on fuel in the long run. Any ideas to save on fuel I would appreciate.
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