Has anyone put a Getrag / Muncie(NV)282 behind a 225 dauntless in a cj-5?

Has anyone put a Getrag / Muncie(NV)282 behind a 225 dauntless in a cj-5?

It is the 5 speed manual they used in the v6/v8 Fiero's as well as tons of other cars and is the grandfather of what is used in many gm cars today.

* 1st gear: 3.50:1
* 2nd gear: 2.05:1 (MG1: 2.19:1)
* 3rd gear: 1.38:1
* 4th gear: 0.94:1
* 5th gear: 0.72:1
* Reverse: 3.41:1
* Final drive ratio: 3.61:1

Compare it to the 3 speed
3.33:1, 1.55:1, 1:00:1, Rev 4.53:1

Yes it is a transverse transmission I would use a small shaft to a 241/300.

Running the stock axles(want it to look stock) and I think it will save about a foot in drive-line length and that is a huge difference when your talking a cj5.

Long story short running the stock axles(4.10). 31 inch tires and the dana 300.
using this site. http://www.grimmjeeper.com/gears.html to get the numbers below.


Top gear
the 3 speed at 2250 rpm= 51 mph
the 5 speed at 2250 rpm= 70 mph

The 3 speed at 3250 rpm= 73 mph
The 5 speed at 3250 rpm= 102 mph

Has anyone done it before if so what did they have to do? Will it work if not why not.

I am looking at a cj5 on Saturday. While I see myself rebuilding the 225 with mild mods I don't see using the 3 speed transmission. But after looking for other transmissions(non-electronic). I end up having the drive-line just to long. I looked at 4 speeds and then 5 speeds still to long after the transfer case. So I peeked at transverse setups and this looks like it will work nicely.

Thank you

 

what's wrong with the 3 (or 4) speeds????????

 

Nothing is wrong with them.
But I want to drive this thing as a daily driver(only like 2-5k miles a year mind you). The two overdrive gears would not only save gas. But would really reduce the wear on the rest of the drive line without having like a 20" rear shaft.
These things can be bought new for between 1500 and 2k from gm. It would be about the same if i got a entire car with one in it(scrap body deal).
The 3.8 they had in the fieros was a descendant to the dauntless. I know i will need to move a few things around like the oil filter and starter as making a new pan. And, I doubt it would directly bolt up but it would be dang close.

Oh, and I used 4.11 axle gears as a guess. That was just going on the high end.
I need to see if this engine is seized before I go out and start buying parts. And I wont know that till Saturday. Just know it is a really good factory built engine and with some mild mods and basic upgrades(electrical) I can make it into something I am really proud of.
Also my dad has a 64 skylark with the v8 "nailhead" that he is restoring . So there is the Buick aspect of it.

At this point i have looked at like 20 cj's in person no idea how many i have dismissed online. But I am picky and "unmolested" gets alot of respect in my book. This will be my first cj-5 and I want to make it to last.
Yes part of me wants to keep the 3 speed and I probably will for a while until the dauntless is rebuilt to its factory strength.

 

Why not just get a factory original overdrive for your jeep? You can get one for around $700 that will give you a final drive of .75:1, act as splitter and won't add or subtract from your driveline one bit.

Oh and just as a point there were no v8 Fiero's and the v6 was the 60* 2.8 Chevy v6 and its not related in any way to the 225 and the Getrag 282 will not bolt to a Buick engine as it was designed for a Chevy block.

 

Agree with Mcruff, get the Warn/Saturn OD. It wil turn your 3 speed into a 6 speed, or your 4 speed into an 8 speed. The ratios you listed aren't significantly different from what you would be getting with this setup.

 

I was referring to the fieros that had the 3.8 v6 (3800).
I looked at gear vendor and a ranger like thing then kind of dismissed the idea and started looking at transmissions.
I actually totally over looked the saturn overdrive option.

OK, yea will go the saturn overdrive option thank you.
So this is embarrassing...

 

Dont be embarrassed! Everyone on this forum was new to JEEPs at some point. Thats why I love this place, no one minds helping out with any question you might have. Which also saves you some money sometimes! I wouldn't have gotten mine on the road without these guys!

 

To my knowledge there were no factory Fiero's with a 3.8 v6 only the Chevy 2.8 v6

 

Um....buy using that kinda of transmission you wouldn't be able to bypass the final drive. It would add some extremely low gears...like 4:1 or more.

Its not uncommon on some of the buggies in europe to do this. One of the most common setups is a VW engine and trans ( FWD stuff ) turned 90 degrees so the 'axle' outputs become the front and rear drive shaft outputs. Its like driving around in LOW range all the time. Works great for there lightweight crawlers...but top speed is 40-50mph at most.