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09-19-2009, 05:09 PM | #1 |
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Join Date: Sep 2009
Location: Hogansville, Georgia
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Switch from manual to auto transmission
I've got a 68 Chevy 2 wheel drive 1/2 ton truck with a manual 3 on the tree. I want to swap to a auto probably a 350, will the existing cross member work with that trans? Also some one told me the dive shaft will work, any thoughts?
Ken Last edited by Rodd Zane; 09-19-2009 at 05:14 PM. |
09-19-2009, 05:13 PM | #2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Switch from manual to auto transmission
your 3 speed doesn't have a crossmember, just mounts to the bellhousing.
You'll need; Crossmember tranny torque converter speedo cable tranny mount most likely driveshaft or mods to yours Kickdown cable cooler lines shifter linkages auto column radiator with trans cooler Last edited by Longhorn Man; 09-19-2009 at 05:35 PM. |
09-19-2009, 05:15 PM | #3 |
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Join Date: Dec 1999
Location: Spring Valley, Ca.
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Re: Switch from manual to auto transmission
I think that the last item Longhorn meant was a radiator with the trans cooler!
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Smitty '71 Short Fleetside Spring Valley, Ca. |
09-19-2009, 05:36 PM | #4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
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Re: Switch from manual to auto transmission
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09-19-2009, 05:15 PM | #5 |
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Location: K.C. Missouri
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Re: Switch from manual to auto transmission
the crossmember that the bellhousing bolts to will need to be removed (8 rivits), an automatic trans cross member will need to be found, if you use an 9 inch tail housing T350 you can use your driveshaft "I think" just measure before you buy the automatic,there are 3 different lengths 6,9, and 12 in tailhousings. good luck!!
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1969 Short Stepside 1969 4 WD Suburban 1970 1 Ton Dually....Misfit oh, and a 2001 HD 2500, 8.1 Allison Shortbed 4 Door Last edited by Skirkpat; 09-19-2009 at 09:05 PM. |
09-19-2009, 05:18 PM | #6 |
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Location: Hogansville, Georgia
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Re: Switch from manual to auto transmission
Do they make aftermarket crossmember?
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09-19-2009, 05:32 PM | #7 |
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Location: Hogansville, Georgia
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Re: Switch from manual to auto transmission
Does anyone know what year crossmember will work with the 68
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09-19-2009, 05:41 PM | #8 |
Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
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Re: Switch from manual to auto transmission
Th350 lengths are 6, 9, and 12
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I'm on the Instagram- @Gearhead_Kevin |
09-19-2009, 06:32 PM | #9 |
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Location: Spring Valley, Ca.
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Re: Switch from manual to auto transmission
You surprised be there Longhorn! Thought maybe it was because I didn't have my glasses on.
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Smitty '71 Short Fleetside Spring Valley, Ca. |
09-19-2009, 06:46 PM | #10 |
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Join Date: Dec 1999
Location: Yuba City Ca.
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Re: Switch from manual to auto transmission
Welcome to the board. To answer your ? yes there is an aftermarket X member. I would look on the parts board for a good used one, probably cheaper. heres a link to ECE.
http://www.earlyclassic.com/catalog.aspx
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/ Last edited by john; 09-19-2009 at 07:11 PM. |
09-19-2009, 09:04 PM | #11 |
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Location: K.C. Missouri
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Re: Switch from manual to auto transmission
ooop's, thank's for catching that. I fixed it.
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1969 Short Stepside 1969 4 WD Suburban 1970 1 Ton Dually....Misfit oh, and a 2001 HD 2500, 8.1 Allison Shortbed 4 Door |
09-19-2009, 09:04 PM | #12 |
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Re: Switch from manual to auto transmission
ooop's, thank's for catching that. I fixed it. I knew it was a multiple
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1969 Short Stepside 1969 4 WD Suburban 1970 1 Ton Dually....Misfit oh, and a 2001 HD 2500, 8.1 Allison Shortbed 4 Door |
09-19-2009, 09:06 PM | #13 |
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Location: K.C. Missouri
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Re: Switch from manual to auto transmission
Thank you sir, I fixed my mistake....
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1969 Short Stepside 1969 4 WD Suburban 1970 1 Ton Dually....Misfit oh, and a 2001 HD 2500, 8.1 Allison Shortbed 4 Door |
09-20-2009, 12:04 AM | #14 |
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Location: Ft Stockton Texas
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Re: Switch from manual to auto transmission
I have a LS motor with a 4L60-E trans. Had to move new motor back 2 inches for newer single piece straight driveshaft and just used a piece of angle iron for a trans member, no problems so far and free, C Chanel will work too. If u wanna use the old driveshaftll it'll have to be cut, maybe find one off a caprice or similer like I did about the right length.
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