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Old 10-17-2011, 01:08 AM   #1 (permalink)
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242AMG vs 205

Hey Guys,

I have a CUCV M1009. Weighs in about 7,500 lbs. 6bt with a 47rh trans, 37" Baja T/As now, and 42"s later. Lots of expedition, but some difficult rock crawl, and fast-desert mixed in.

Anyway, I have a 242amg from a 90 HMMWV laying around, and can not get an answer in the chevy forum of how strong these things really are. Chevy guys tell me to go with a 205.

What do you guys think? Obviously the 242amg came in the HMMWVs for a reason, but I wanted pros/cons.

Thanks,

Dave
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Old 10-20-2011, 07:50 PM   #2 (permalink)
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The AMG242 is pretty stout,rarely ever had a issue with them in 10 years I spent as a mechanic in the military.There still used in M1113's which weigh almost 12,000lbs.It is a full time 4wd t-case with hi lock and low lock,low is 2.72:1.The 205 is very stout but has a higher low range gear of 1.96:1.It's a gear to gear t-case so no chain to worry about unlike the 242.
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Old 10-21-2011, 03:29 AM   #3 (permalink)
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Thanks for your insight on the 242AMG. Lower gearing may be nice, will run #s, and as I will have 43"s for trails and 37"s for DD, I have to take that into account. Strength and reliability rate high on this build, as breaking in the middle of nowhere is fun to talk about later, but not then.

Mucho appreciation.

-Dave
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Old 10-24-2011, 11:05 AM   #4 (permalink)
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The 242 AMG is pretty strong, many folks don't realize it's a beefier version than the ones on the Jeep, it has larger shaft diameter, larger gears and a thicker/larger chain as well.

Are you planning on hooking up a cooler? The HMMWV/H1 models are cooled by ATF or Engine Coolant depending on model year and configuration [Engine Coolant on the newer 2006 H1 Alpha and a few uparmored HMMWV"s that have the cooling on the differentials as well].
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Old 10-30-2011, 08:37 PM   #5 (permalink)
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The biggest problems I have had with them is the chain stretching but that is under 14K+ pound 1152 Gun Trucks. Also the speedometer drive can occasionally be a pain in the ass...
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Old 03-03-2013, 02:02 AM   #6 (permalink)
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Quote:
Originally Posted by Mohawk Dave View Post
Hey Guys,

I have a CUCV M1009. Weighs in about 7,500 lbs. 6bt with a 47rh trans, 37" Baja T/As now, and 42"s later. Lots of expedition, but some difficult rock crawl, and fast-desert mixed in.

Anyway, I have a 242amg from a 90 HMMWV laying around, and can not get an answer in the chevy forum of how strong these things really are. Chevy guys tell me to go with a 205.

What do you guys think? Obviously the 242amg came in the HMMWVs for a reason, but I wanted pros/cons.

Thanks,

Dave
Here is a chart that I found in another forum that is no longer in print because New Venture gear maybe caput. Hopefully it is of value to the discussion.



The New Venture Gear Numbering System

The first number is the number of speeds:

“1″ = one speed (high range). Example – the NV 136.
“2″ = two speeds (high range and low range). Example – the NV 241.
The second number is the strength:
The NV 241 is designated “4″ in strength – tougher than the
NV 231, but not
as heavy duty as their largest T-cases, which go up to a “7″ (eg,
NV 273,
for vehicles with a GVW of 17,500 lb).
The third number designates the type of T-case:
“1″ = part-time 4WD
“2″ = full-time 4WD with an open center differential plus lockable
part-time
option – like the Selec-Trac NV 242 of the Jeep Cherokee and Dodge Durango,
or the Hummer’s NV 242HD AMG.
“3″ = electrically shifted.
“4″ = not currently used.
“5″ = Torsen-type differential.
“6″ = computer controlled multi-plate wet clutch, like GM’s
AutoTrac NV 246.
“7″ = GeroDisc – like the Grand Cherokee’s Quadra-Trac
II NV 247.
“8″ = not currently used.
“9″ = viscous coupling.


Looking at modifying my new 242AMG in my willys. Right now I'm in the fact finding stages of adding 2wd to it. Looks like predator offers a new case for $3500 that has a 2wd option. That seems way overpriced as my complete 4L80E 242AMG combo was $5000 from Rod Hall. A while back blue hummer outfitters had a disengage kit for around $800. Anyone have any experience with that kit or converting these cases to 2wd?
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Last edited by 49willys_mogon; 03-03-2013 at 02:20 AM.
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Old 03-04-2013, 05:34 AM   #7 (permalink)
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Quote:
Originally Posted by 49willys_mogon View Post
4″ = not currently used.
All very good info, but the 4 denotes the AWD with lockable center differential and electronically shifted. Basically the same as a 142, or 242, but with a shit motor. They are found in Rams, Durangos, Grand Cherokees, etc....

I see the 205 and 242HD as two completely different types of transfer cases, and due to the strength of both, I would choose the one with the functions you are looking for. 2WD and front dig are cool, but some love the AWD. Apples to oranges in function, not in strength.
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Old 03-04-2013, 12:49 PM   #8 (permalink)
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I see the 205 and 242HD as two completely different types of transfer cases, and due to the strength of both, I would choose the one with the functions you are looking for. 2WD and front dig are cool, but some love the AWD. Apples to oranges in function, not in strength.

Well said Mh4. If it were me I'd go with a 205 because gears are better than chains and the aftermarket for the 205 is vast. For a CUCV M1009
being stuck in AWD for the street is silly unless you have one of those lambos from the eighties. Otherwise if you plan on this being just a trail rig and the AMG242 is just laying around I'd say do it.
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Old 03-04-2013, 12:56 PM   #9 (permalink)
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2wd/AWD/4wd Selectable Transfercase Predator Motorsports

***You can't tell me Predator reinvented the wheel on this. There has got to be a solution to convert an existing case to 2wd.***

New and improved for 2012! Our new HD T-Case is a vast improvement over the stock and our original 2wd/4wd tcase.

Now you are able to improve fuel economy 13-18% by simply installing our Selectable 2wd/AWD/4wd Transfer Case! Simply remove your stock All Wheel Drive Transfer Case and install the Predator Transfer Case for a direct replacement and an instant fuel economy savings. On average we documented a 15% increase in fuel economy. So with the average 6.5td Hummer getting 13mpg, you should now be getting aprox 15mpg! The shifter acts exactly the same way it did before except that you now have a 5th gear selection, all the way forward on your gear selector, which is the 2wd setting. No draw backs or compromises at all! By selecting the 2wd setting, you are now disengaging power going to the front drive shaft and gearing thereby reducing wear and friction which results in an increase in fuel efficiency and performance. Available for all model H1's and HMMWV's.

In addition our T-Case works just as the factory T-Case does with both the TC Lock Light functioning properly as well as the 4-Low to PCM Input. The 4-Low to PCM Input communicates with the Transmission engaging a 4-Low setting inside the programing. Finally, our T-Case is finished in our custom Predator color Heavy Duty Powder Coat finish and Stainless Steel Allen Bolts.

Note: Core charge included in price. If you return your original transfercase, we will issue a credit back to you for the core charge cost of $300.
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