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12-08-2009, 04:03 PM
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#1 |
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Registered User
Join Date: Jan 2007
Location: LOUISIANA
Posts: 151
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from 700r4 to th400
My 84 GMC has a 700r4 and im going to put in a th400 when i put my new engine in. My question is do i have to move or change the tans crossmember. If i have to get another one who sells them.
Thanks
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1985 GMC ( future plan pro tour build for the wife ) Black 2013 GMC single cab 4/7 drop on 24'' Torque Thrust ST   rules 
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12-08-2009, 06:58 PM
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#2 | |
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Senior Member
 
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: from 700r4 to th400
Quote:
i think you can move your existing crossmember 3" forward, but I think you'll need a th400 yoke on your driveshaft............ and your driveshaft will need to be lengthened approx 3"
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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12-08-2009, 07:11 PM
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#3 |
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Registered User
Join Date: Jan 2007
Location: LOUISIANA
Posts: 151
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Re: from 700r4 to th400
Thank you very much, i going to buy a new driveshaft. That sounds easy enough to do.
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1985 GMC ( future plan pro tour build for the wife ) Black 2013 GMC single cab 4/7 drop on 24'' Torque Thrust ST rules
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12-12-2009, 10:52 PM
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#4 |
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At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,155
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Re: from 700r4 to th400
Also if you can find one get a 75 or older X-member as they have room for dual exhuast or 3/4 ton with some minor fab work room for 3" dual exhaus.Like this
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" That didnt make it any newer " " Dont antique the equipment " Last edited by KQQL IT; 12-12-2009 at 10:52 PM. Reason: cant proof read |
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