Is this possible

[93-4.0L]

I was just wondering if it was possible to run a second overdrive behind the manual transmission in my truck currently, right now the truck running 65 mph is turning about 2700-2800 rpm and I want to get that down as low as i can.

Some quick info on the truck,
93 ford ranger splash 2wd
4.0l v6
5 speed manual

lookin for some sort of electronic secondary overdrive.

Thanks,
Andy

 

[metalmacguyver]

it would be much easier to go with different axle gears. as far as i know, there is nothing available that is like a 2nd overdrive. the only things that i know of that have it are some trannies that are found behind diesels like the chevy duramax.

your truck is a 2wd so you could just swap in a completely different axle. it would be cheaper than getting new gears. a whole axle wouldnt be more than 150 a junk yard where you pull it.

 

[AllanD]

Slightly taller tires would be just as effective and probably cheaper.

And I don't really believe that more overdrive is really going to help your mileage
as much as you think it will.

AD

 

[krugford]

+1 If you want to experiment, a full axle swap or taller tires would be the fastest and probably the cheapest depending on where you get your parts.

 

[soylent_green]

If you REALLY want to:

http://www.gearvendors.com/4x4.html

But for that kind of money, I would do trans, axle, AND tire swaps.

 

[Sunk]

Those are RPM's are fine. The engine is in its powerband and not working that hard. There's a reason it came from the factory that way.

 

[Will]

Something's screwy here. You must have 4.10s and 14" rims on that truck to get those type of revs at 65. They seem to gear and size the tires so the 4.0 motor runs around 2,100 at 65. These are factory 4.0 set-ups I've seen.

195-70 14s with 3.08s= 2100 @ 65mph
215-75 15s with 3.55s= 2100 @ 65mph
235-75 15s with 3.73s= 2100 @ 65mph

 

[93-4.0L]

Thanks,
First off it is two wheel drive and lowered so bigger tires will not fit (already have a slight rubbbing issue).

Those are RPM's are fine. The engine is in its powerband and not working that hard. There's a reason it came from the factory that way.

Back when my truck made the speed limit was 55 and at 55 it is turnin about 2100-2200 rpms so now with increased speed limits i need a taller gear than what i have currently.

Also I know I could change the rearend but I would rather spend some more money and keep my current rearend.
i guess I'm just stubborn and want it all.
Thanks Again
Andy

 

[MAKG]

You're fooling yourself. Speed limits are not that much higher now than they were in the 80s. But powerbands are....

You're in the powerband. Changing gears is not going to affect mileage significantly if you stay in the powerband. If you overdo it, mileage will DROP.