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#1 |
Registered User
Join Date: Dec 2008
Location: Oak Hills, California
Posts: 393
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Replacing Manual Trans for TH350 Automatic
Hi Folks, I need Help from the seansoned C10 builders.
I bought a 63 c10 long bed with a 6 inline motor and no trans. They have removed the 3spd. cross member and the clutch pedal. Also they intalled an nice chrome steering colunm for an automatic. So I have purchased a th350 installed it and used a 72 c10 crossmember. It appears the E-brake crossmember and cables will have to be removed in order to us my 72 C10 trans crossmember or any crossmember period. I have a short 2 piece drive shaft but yoke only goes in about 2 inches. So I took the off a 72 c10 long bed drive shaft and it is two long maybe 6" to long. So what do you do for a driveshaft? Does anyone have any suggestions regarding replacement? Is there a 1 piece I can use with out having it custom made? Maybe from another make or model? Has anyone encountered ? what did you do? |
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#2 | |
Registered User
Join Date: Jun 2010
Location: Georgia
Posts: 30
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Re: Replacing Manual Trans for TH350 Automatic
Quote:
as far as the driveshaft, if i read your post correctly, you have a 1 pc from a longbed truck that is too long. I would try to find a local shop that sells big truck parts--they usually rebuild alternators and other stuff for dump trucks ect. if they do stuff like that, my bet is they have a guy there that can cut your shaft to the length you specify, and balance it (that's what i did with mine)--a whole lot cheaper than buying a new one.
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My Build thread http://www.67-72chevytrucks.com/vboa...d.php?t=408574 |
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#3 |
Registered User
Join Date: Dec 2008
Location: Oak Hills, California
Posts: 393
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Thanks a lot Ranger. That really does help. I like the idea of using the original crossmember and adding a plate for th350 to bolt up to it even after notching it. It will allow me to keep my E brake functional. Great Idea! CPP has the cross member for $70.00 but has no provisions for the E brake. Now as far as the driveshaft I have the 2 pc. and its too long. I really was trying to avoid cutting and hoping someone has used one from a different truck. I may not have a choice but to cut it. I like the idea of using a 1 pc driveshaft. I really dont like using them 2 pc shafts but I am onlu running the stock 6 inline motor.
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#4 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,248
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Re: Replacing Manual Trans for TH350 Automatic
There's really nothing wrong with running a 2 piece driveshaft in a longbed. I believe you're going to just need to get the one you have shortened. That typically doesn't cost that much. As for the e-brake, if you don't have the means of fabricating the linkage on the '72 crossmember, I would just convert to the '66-'72 e-brake cables. They don't use that linkage assembly that is on that crossmember on your '63. If you try to modify that e-brake crossmember to be used as a trans crossmember, be sure to reinforce it. Those weren't designed to be used as a transmission crossmember.
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#5 | |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Replacing Manual Trans for TH350 Automatic
Quote:
Ray Last edited by raycow; 08-10-2010 at 08:57 PM. |
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#6 |
Registered User
Join Date: Dec 2008
Location: Oak Hills, California
Posts: 393
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Re: Replacing Manual Trans for TH350 Automatic
Thank you all for your help. I did go out to the salvage yard and found most had damage from the fork lift from when they moved them around the yard. So I search for driveline shop and found one not far from home that was able to do it for $65.00 cut and balanced. I had him install new u-joints and center support bearing. Now I am working on my shift linkage.
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#7 |
Registered User
Join Date: Jul 2005
Location: Riverside CA
Posts: 860
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Re: Replacing Manual Trans for TH350 Automatic
Did your driveshaft have the correct yoke on it? I think 3 speeds and powerglides are 17 spline, and 350, 400, and 700r4 are 31 spline. I Had to get a different yoke for my 64.
My cousin welded up the original linkage to work for the shifting. Last edited by edflores; 08-12-2010 at 02:01 AM. |
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#8 |
Registered User
Join Date: Dec 2008
Location: Oak Hills, California
Posts: 393
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Re: Replacing Manual Trans for TH350 Automatic
You may be right. I never used the old one. I bought one from a 71 with a th350 in it. It when in with out any problem. if it was a 17 spline would it have gone in?
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#9 |
Registered User
Join Date: Jul 2005
Location: Riverside CA
Posts: 860
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Re: Replacing Manual Trans for TH350 Automatic
Nope. Way different.
Post pics of your truck!!!! |
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#10 |
Registered User
Join Date: Dec 2008
Location: Oak Hills, California
Posts: 393
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Re: Replacing Manual Trans for TH350 Automatic
Here is a pic from the day I bought it.
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Tags |
drive shaft, th350 installion |
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