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2.3L ('83-'97) I could sure use some advice, for realzies this time.


Joined
Mar 30, 2025
Messages
7
Points
1
City
oklahoma
Vehicle Year
1993
Transmission
Automatic
Hello ThorRagnarokStation, I am sorry if this plea for suggestions is in the wrong section of the forums, but it does involve the dirty old sluggish 2.3 in my 1993. I have a habit of making shtposts on the forums, but I'm super duper serious this time, like for real.

Okay, so my conundrum is this, my dirty fart bag 2.3 is terrible on gas, shocking right? My terrible no good 2.3 is mated to a terrible no good A4LD, which is tied to an Open 3.73 7.5 rear end. I'm looking for suggestions that might MAYBE POSSIBLY improve my fuel economy slightly, even a teeny weinny amount. With this combination I get sub 20 miles per gallon at 65 on the way to work and back, so what I was thinking is, A different rear gear ratio, and maybe a bed cover. I have a whole 8.8 axle torn apart to replace seals and bearings and, while I'm in there, I'm converting it to a limited slip center section.

My main question is this: *What* rear gear ratio can the 2.3 and A4LD handle completely stock, and still have even a *little* amount of acceleration when needed, as long as it can maintain 65-70, I'm really not concerned if it takes 10 business days to do it. Along with this question of what rear gearing to use, I was thinking that a bed cover, i.e. camper-shell could possibly help aerodynamics a little bit? Am I naïve in My assumption? Any suggestions is good help
 
The only thing that I've seen help is reducing rotating mass of tires and the contact patch, when my '90 was stock I got up to 28mpg with 3.08 gears and 195 70 14 car tires, once I went bigger in tires my mileage went down. On my '97 it doesn't seem to matter but I haven't changed tire size much from 225 75 14 to 235 75 15 so the contact patch stays about the same but that one has 4.10's so I stay larger... but also gets 22-24mpg now, with more aggressive tires it got 20-21.

So in other words it really depends on tire size on what gears you can go to...
 

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