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Old 07-20-2012, 10:09 PM   #1 (permalink)
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bw 1356 doubler

I like the bw t-case because they are tough as shit and under rated, so i've done some research regarding the doubler options. Behemoth Drive train is looking pretty good considering not alot of people do a kit like this. Has anybody used one of these units and how well has it held up?
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http://www.pirate4x4.com/forum/ford/...bler-tech.html

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Old 07-21-2012, 10:09 AM   #2 (permalink)
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There's a few threads on here regarding the behemoth doubler. Ppl say it blows as far as material used and it's not very well thought out. IMO.

On the other hand. Check out Duffy's new box4rocks that uses the planetarys from various cases. Pretty sweet Idea.

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Old 07-21-2012, 08:44 PM   #3 (permalink)
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I have had one of the Behemoth Drivetrain kits in my Bronco for about 7 months now, it works great! He has done a redesign and is using a new case now instead of the hack and wack versions.

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Old 07-22-2012, 06:22 PM   #4 (permalink)
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If you got the room length wise you can just cut the side of bw and build an adaptor. I did this almost 7 ago. Never had any issues. Got a 351 with 44 tires
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Old 07-22-2012, 11:11 PM   #5 (permalink)
trial and error
 
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Quote:
Originally Posted by Rockcrawler_101 View Post
If you got the room length wise you can just cut the side of bw and build an adaptor. I did this almost 7 ago. Never had any issues. Got a 351 with 44 tires

input and output compatible?
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http://www.pirate4x4.com/forum/ford/...bler-tech.html
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Old 07-23-2012, 07:11 AM   #6 (permalink)
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Quote:
Originally Posted by whiterunner27 View Post
input and output compatible?
the input on the 1356 is 31 spline.
the output is also 31 spline on the slip yoke 1356
it will be very long, but you can make an adapter and just slide the two together without a new shaft.

not sure if thats what you were asking.
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Old 07-23-2012, 07:15 AM   #7 (permalink)
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Quote:
Originally Posted by Rockcrawler_101 View Post
If you got the room length wise you can just cut the side of bw and build an adaptor. I did this almost 7 ago. Never had any issues. Got a 351 with 44 tires
Yours was the inspiration for mine.. Ive got a good 6 years on mine..
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Old 07-23-2012, 08:04 AM   #8 (permalink)
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jrod and rockcrawler, how long is your front shaft? estimate.
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Old 07-23-2012, 08:12 AM   #9 (permalink)
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Quote:
Originally Posted by Rockcrawler_101 View Post
If you got the room length wise you can just cut the side of bw and build an adaptor. I did this almost 7 ago. Never had any issues. Got a 351 with 44 tires
Got any photos?
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1988 Ford F-250 Diesel, front hp kp 60 4.56's detroit, rear sterling 10.25 4.56's detroit, bastardized suspension, 12k smitty, cm ss flatbed, 38" ssr's, yukon 35 splines
http://www.pirate4x4.com/forum/ford/...bler-tech.html
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Old 07-23-2012, 09:14 PM   #10 (permalink)
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here are two links to the build
http://www.broncoii4x4.com/forum/vie...w+1356+doubler
http://www.pirate4x4.com/forum/showt...doubler&page=2

The front drive shaft is around 65 inches but i also pushed my front axle forward. The rear is only 17 and my wheel base it 117 if i remember correct.
here is a pic of the rig now. Used to be a bronco II
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Old 07-23-2012, 10:32 PM   #11 (permalink)
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just read the build on the bii forum, Im doin what you did. I'll post pics when I get the time to build i, thanks for the info.
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1988 Ford F-250 Diesel, front hp kp 60 4.56's detroit, rear sterling 10.25 4.56's detroit, bastardized suspension, 12k smitty, cm ss flatbed, 38" ssr's, yukon 35 splines
http://www.pirate4x4.com/forum/ford/...bler-tech.html

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Old 07-23-2012, 11:50 PM   #12 (permalink)
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Just make sure to cut outside the ribbing on the t case to make for more surface area for it to seal up. I redid that sense mine leaked before. After doing that i have never had a leak.
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Old 07-25-2012, 01:14 PM   #13 (permalink)
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Hmmm ... this has got me thinking now ... there are a couple electric-shift 1356s I can get my hands on ... maybe I could try my hand at building an electric doubler haha.

Thanks for the info on this, I would never have thought to stack a pair of 1356s.
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Old 07-25-2012, 08:04 PM   #14 (permalink)
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Quote:
Originally Posted by FordX4-offroad View Post
jrod and rockcrawler, how long is your front shaft? estimate.
as a long box pickup, both front and rear were 47 3/4"
After i shortened it, and linked it, and put in 1 tons.. I'm not sure
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