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12-20-2006, 07:18 PM
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#1 |
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Cochino_Racing_909
Join Date: Oct 2006
Location: California
Posts: 280
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Has anyone....?????
Has Anyone converted over from a th350 to a th400 in there K5 or Jimmy?
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12-21-2006, 02:01 PM
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#2 |
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Senior Member
Join Date: Mar 2006
Location: modesto CA
Posts: 239
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Re: Has anyone....?????
I changed mine out
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http://www.cardomain.com/ride/2461088 |
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12-21-2006, 02:01 PM
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#3 |
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Active Member
Join Date: Oct 2006
Location: wi
Posts: 188
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Re: Has anyone....?????
not that a big a deal to do.
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12-21-2006, 02:02 PM
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#4 |
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Registered User
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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Re: Has anyone....?????
mine has a th400
__________________
'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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12-21-2006, 03:18 PM
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#5 |
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Cochino_Racing_909
Join Date: Oct 2006
Location: California
Posts: 280
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Re: Has anyone....?????
I am talking about changing it in a 4X4! Oh yea and wht is Axel Wrap?
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12-23-2006, 06:29 PM
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#6 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Has anyone....?????
We don't have a TH 400 in a Blazer but we have one in a short box 4x4. Since the TH 400 is longer there are some mods to be made in addition to the transfer case adapter, (the NP 205 is the same for both tranny's). The longer TH 400 requires a longer front drive shaft, a shorter rear drive shaft and the crossmember needs to go rearward. The side mount for the transfer case has to be relocated. The transfer case shifter has to be bent in an "S" shape to move it forward. The shift linkage is different, also.
Jim |
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12-24-2006, 09:12 AM
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#7 |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,772
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Re: Has anyone....?????
Hey Jim, thanks for the heads up and info. Just picked up my TH400 and was not sure what was involved, sounds pretty strait forward, I have a floor shift so no problem there, but how do you bend the transfer case shifter. Just heat and bend around a suitable mandrel?
Merry Christmas, J.
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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12-24-2006, 10:46 AM
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#8 |
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Registered User
Join Date: Aug 2006
Location: Powell, Wy
Posts: 135
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Re: Has anyone....?????
another thing the th400 will have a 32 spline output whereas the th350 has a 27 spline output so you'll either have to change the input gear into the case or swap t-cases
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12-24-2006, 10:51 AM
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#9 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Has anyone....?????
We just heated and bent the shift lever. It was a lot of bending and the shift lever is pretty short by the time you get it into the right position.
We use the truck for towing a car trailer and the TH 400 works great! Jim |
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12-21-2006, 05:08 PM
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#10 |
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Active Member
Join Date: Oct 2006
Location: wi
Posts: 188
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Re: Has anyone....?????
still isnt a big deal, i am not sure what t case adapters you might need, or if the splines match, since i dont know the specs of the 2 off hand, as gm made the needed adapters, as the t case used is gona be diffrent for diffrent years, ect...
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12-28-2006, 07:49 AM
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#11 | |
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Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,537
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Re: Has anyone....?????
Quote:
Shift points are different, first gear is higher and they rob more power from the drive train. Flame suit on 
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