gear vendor
More Turbo
Joined: Sep 2007
Posts: 552
Likes: 9
Milt, Im new to the diesel trucks i bought me a 87 f-250 with a c-6 its 4x4. And she tachs real high at highway speeds. about 2600rpm @ 65mph. is this something i could use, I guess first is the gear vendor an overdrive unit? and is it applicable to my truck? Im not a dummy at mechanics, just never worked with diesels. Im just now cutting my teeth with the changing of glow plugs and relay. Thanks for any info
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
Yes it is very applicable and yes it is overdrive although they make an underdrive too.
I have one on my 86 4X4 and it drops the high gear app 500 rpms. you can also split the gears after 20 mph giving you 5 or maybe even 6 gears with that c6. You can't however use it while your in 4x4 only changes the ratio after the Tcase to the rear wheels.
As far as I am concerned it is the best thing since sliced bread where our old diesels are concerned.
I have one on my 86 4X4 and it drops the high gear app 500 rpms. you can also split the gears after 20 mph giving you 5 or maybe even 6 gears with that c6. You can't however use it while your in 4x4 only changes the ratio after the Tcase to the rear wheels.
As far as I am concerned it is the best thing since sliced bread where our old diesels are concerned.
Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
They are about $3,000 new, I have not looked for a used one.
EDIT: Damn star, you beat me by 1 minute. lol
Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
What are your plans as far as tranny, 4wd or 2wd and gearing?
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
It is two wheel drive but it will turn into four wheel drive with either a ZF5 (which I have one) of a ZF6 if I find a decent deal on one.(Ijust missed one last week) and gearvendor with probably 4.56 gears.
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
Bill I will probably pull a camper and boat some, but I like to be able to do whatever I need to at the time. I have said for years that if I ever fimd a 73 to 79 crew with factory air that I would build the last pickup I ever want, but I just wanted a rust free body as the motor and running gear will all be newer. The next year will be just finishing up gathering up the rest of the parts I need as money allows. I still need for sure a D60 and would like a ZF6 and probably seats out of a 05 or 6 crew and of course the gear sets and a hydroboost setup. It has to have a bodylift and highboy springs, so I have to wait and see what size tires I will need before I decide for sure on the gears.
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
Bill This gv unit is not exactly the one I want for the crew, If I find a ZF6 I want one that goes in place of the carrier bearing. If I use a ZF5 this one will be better. I still have to get the right adapter though.