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- - from 700r4 to th400 (https://67-72chevytrucks.com/vboard/showthread.php?t=375548)

GWEE	12-08-2009 04:03 PM

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

americanmusc1e

12-08-2009 06:58 PM

Re: from 700r4 to th400

Quote:

Originally Posted by GWEE (Post 3662640)

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

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"

GWEE	12-08-2009 07:11 PM

Re: from 700r4 to th400

Thank you very much, i going to buy a new driveshaft. That sounds easy enough to do.

KQQL IT

12-12-2009 10:52 PM

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 http://i358.photobucket.com/albums/o...t/100_1859.jpg

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