they are fawking HUGE- IMO it wont fit.

 

Clark 280VO

I have a Clark in my M37. There's a guy in Mississippi, Wayne Wilcox, calls himself "Performance Gear". He specializes in Clarks and does some adapters for them. He is VERY difficult to deal with and had $1K of my money for almost 2 years before I got it back.
A Clark is 15" long and weighs about 208 lbs. What ratios do you want?
Charlie

 

I was asking because they have quite granny low first gear and have the over drive, they start with 6.86 and even 7.87. Would be better then a NV4500. There is a guy who is selling one for 200$ but if it costing 1K for putting it in my Jeep i am not sure that i will go with that set-up.

RickyCJ7

 

Not all Clarks have Overdrive, in fact there are only a few. All Clark overdrive model numbers end in VO. There is the 200VO (6.06, 3.50, 1.91, 1.00, 0.80, R-4.87), the 204VO/205VO (6.06, 3.50, 1.91, 1.00, 0.80, R-6.00) the 207VO/251VO/264VO (6.06, 3.50, 1.80, 1.00, 0.80, R-6.00), the 280VO (5.98, 3.50, 1.86, 1.00, 0.80, R-5.04), the 280VOHD (6.17, 3.48, 1.85, 1.00, 0.80, R-6.27), the 300VO/307VO (6.27, 3.51, 1.89, 1.00, 0.80, R-6.27), the 380VO (6.27, 3.55, 1.89, 1.00, 0.80, R-5.11), and the 400VO/408VO (6.17, 3.56, 1.90, 1.00, 0.80, R-6.02). As the numbers increase so will the torque rating (280VO is rated for 330 ft-lbs and the 400VO is rated at 405 ft-lbs). If there is no ID plate on the transmission and you want to know if it is an overdrive try spinning the input shaft and watching the output shaft and remember OD is where you think 4th gear shoud be (all the way to the left and UP).

A much cheaper transmission that I belive has great potential is the Spicer 3053A, the one that comes in 2.5 ton trucks. They are HUGE, but if you have your heart set on a Granny/OD transmission you can't get one cheaper, and they are bombproof. Only problem is nobody seems to have ever put one behind anything but a 2.5 ton military engine. I even contacted Boyce about what I could put it behind and they had no idea. If anyone could figure out how to build adapter plates (tranny to bellhousing and tranny to transfer case) and throw the input shaft on a lathe and cut it down a little someone could have a serious corner on the OD transmission market (at least for fullsizes, these transmissions are HUGE).

Just my $0.02
JYS

 

As the numbers increase so will the torque rating (280VO is rated for 330 ft-lbs and the 400VO is rated at 405 ft-lbs). [/B]

NV4500s are rated at 450, the Cummins has had 460 since 98.5, and there are many out there surviving with much more torque (including mine). Also keep in mind that GVW is a factory in trans torque ratings/longevity.

Pete

 

Spicer 3053A

I even contacted Boyce about what I could put it behind and they had no idea. If anyone could figure out how to build adapter plates (tranny to bellhousing and tranny to transfer case) and throw the input shaft on a lathe and cut it down a little someone could have a serious corner on the OD transmission market (at least for fullsizes, these transmissions are HUGE).

Just my $0.02
JYS [/B][/QUOTE]

Whaddya mean "Boyce had no idea"?? Boyce themselves were putting 3053As behind 6.2s with an adaptation of the stock bellhousing. have they forgotten?
A 3053A is about 1.5" longer than a 280VO Clark.

Charlie

 

I wish I still had the Email I got from Boyce. This was 4 or 5 years ago, and I explained my project (trying to mate a 3053A to a Ford 460), and they wrote back something along the lines of "We deal in military trucks and parts and anything apart from this is outside of our area of expertise". Now it may have been that my E-mail was answered by a new guy or someone who didn't know or didn't care to find out, but it left me with a bad taste in my mouth regarding Boyce.


Charlie, what do you know about the 6.2L-3053A adapter? Stock bellhousing for the 6.2 or the stock bellhousing for the 3053A?

JYS

 

6.2/3053A

Go to the M37 site, www.bigelectric.com, and find Juan, in argentina, who did it. He will be happy to explain, I think. You can easily post on that forum. It has been done!!! Pretty sure it's a mod to the 6.2 bell.
Charlie

 

dead link
I am interested in this
if you have a chance post more info Charles

thanks

 

Charlie,
I still have a 280VO in my garage (among the 1000 lbs. of other H.D. trannies) and think you will know what engine it will mate up to. The stickout is a lot larger/broader/bigger pilot than a Ford NP435/T18/T19 stickout. It came from a Ford F600 4WD dump with a divorced NP205. I'm still holding out hope that I can put it in my CJ8. It is a big sucker. I don't worry about length with a CJ8, only height. It's maybe 3-4 inches taller than my NP435. I will sell it if I can't get it to go.
My bro John had a similar tale of woe from this Wayne Wilcox character in MS. It took forever to get any reasonable satisfaction from him.
regards, as always, jefe

 

Thank you,

the link is good

http://www.bigelectric.com


RickyCJ7

 

Let me know if 280VO trans becomes available for sale.

 

It’s a 21 year old post. It is old enough to drink alcohol legally in any state. Maybe you should check the dates next time.