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Old 10-20-2008, 10:49 AM   #1
mbc9ieII
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changing a truck from a 3 speed to an Automatic

do i need a different crossmember for the tanny?

or can i use the same one that i have for the # speed... one mount in that back?
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Old 10-20-2008, 10:55 AM   #2
cdowns
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Re: changing a truck from a 3 speed to an Automatic

you need to remove the crossmember that is under the engiine/bellhousing and you'll also need an automatic tranny crossmember to go under the tailshaft of the tranny
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Old 10-20-2008, 12:04 PM   #3
my70chevyc10
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Re: changing a truck from a 3 speed to an Automatic

You need a different trans mount and a different starter the starter for the manual trans mounts to the bellhousing. The one you need for the automatic mounts to the engine block with a stright across bolt pattern or a staggered one. The auto crossmember has 2 small peaces on the ends that has to fit between the frame. I just drilled out the rivets an used only the bottem part of the crossmember my trans guy said it is strong enough.
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