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#1 |
Account Suspended
Join Date: Mar 2006
Location: Weaverville, NC
Posts: 718
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6 cyl. Auto changeover
I'm hoping someone can help me. I'm wanting to change my three on the tree over to an automatic. What shaft length 350 turbo is needed? My wife cant drive a stick and its her truck. She's always costing more money. I was hoping it would be motivation for here to learn......boy did that backfire!!!!!!!!!!
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#2 |
Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: 6 cyl. Auto changeover
yeah id like to know this also....although i have a weird 18 inch long trans and not a 21??
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#3 |
Account Suspended
Join Date: Mar 2006
Location: Weaverville, NC
Posts: 718
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Re: 6 cyl. Auto changeover
ttt
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#4 |
Registered User
Join Date: Oct 2007
Location: Tucson, Az
Posts: 172
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Re: 6 cyl. Auto changeover
there are three lenths.. Ido not know the measurement but it is the middle. I just had one build and I am doing this conversion soon. I will get pictures and measurements.
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#5 |
Senior Member
![]() Join Date: Dec 1999
Location: TN/VA
Posts: 6,388
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Re: 6 cyl. Auto changeover
On this change over if you are leaving the 6-cylinder All you need is a 350 turbo with a 6 inch tailshaft. It is the exact same size as your 3-speed bolted to your bellhousing. You will be able to use the driveshaft you already have. Tim
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#6 |
Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: 6 cyl. Auto changeover
hey tim what size trans???the 21 or 18 inchers...????????
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#7 |
Senior Member
![]() Join Date: Dec 1999
Location: TN/VA
Posts: 6,388
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Re: 6 cyl. Auto changeover
I have not measured just the trans by itself but I guess it would be the 18 in. They made 3 diffrent turbo 350's a 6in, 9in, and 12in tailshaft. You would need the shortest one if you are planning on using the same drive shaft with the 6-cylinder. Now if you are converting to a V-8 it is a diffrent ballgame.
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#8 |
Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: 6 cyl. Auto changeover
thanks tim.....any guess on how this 6cyl and auto will run? i know the 350 will take some extra ponies....but i dont know how much????
Last edited by bad6772; 12-19-2007 at 01:54 AM. |
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#9 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: 6 cyl. Auto changeover
On your 67, you will need to replace the slipyolk & shorten the front D shaft to do the swap. I agree with using the short (6" tail" 350 T), & thats a direct swap on the later trucks with the saginaw trans(7 bolt side cover). Your shortie 3 spd is a Muncie(iD by 4 bolt side cover). You can also use a D shaft from a 69-72, 6 cyl 3 spd truck that has the same wheel base as your truck. Best of luck,crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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#10 |
Account Suspended
Join Date: Mar 2006
Location: Weaverville, NC
Posts: 718
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Re: 6 cyl. Auto changeover
What is needed as far as the linkage is concerned? Is it different for a six with an automatic?
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#11 |
Registered User
Join Date: Nov 2006
Location: Alabama
Posts: 120
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Re: 6 cyl. Auto changeover
Ryan,
If you are running a stock intake/carb set-up you will need to fab or source a kickdown bracket. I would assume these would be tough to come by , as most 6 cyl had the manual trans. (I copied this pic from here http://67-72chevytrucks.com/vboard/s...d.php?t=271500 Zac
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Working on my first 1,000 post. I'm sure I'll get there before this project is over ![]() Last edited by Blue71LWB; 01-04-2008 at 06:00 AM. |
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#12 |
Senior Member
![]() Join Date: Dec 1999
Location: TN/VA
Posts: 6,388
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Re: 6 cyl. Auto changeover
Hey Ryan I have the correct driveshaft and linkage for the auto. Also have a van tilt column that will work on the 6 cylinder.
Last edited by Tim Christian; 01-04-2008 at 06:25 AM. |
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#13 |
Account Suspended
Join Date: Mar 2006
Location: Weaverville, NC
Posts: 718
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Re: 6 cyl. Auto changeover
I am running an Clifford Intake and Holley #4548-s carb on it and will add a header as soon as I can afford one. I will also be adding A/C when I can find a template for the holes to be cut. I'm doing the truck for my wife and want it to be driver friendly for her ability....LOL
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#14 | |
Overdrive club
Join Date: Sep 2007
Location: apache junction, arizona
Posts: 819
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Re: 6 cyl. Auto changeover
Those brackets are very hard to find,i sure do need one!!!!!!
Quote:
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#15 |
Account Suspended
Join Date: Mar 2006
Location: Weaverville, NC
Posts: 718
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Re: 6 cyl. Auto changeover
ttt........anyone know where Brian and I can find the brackets?
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#16 |
Registered User
Join Date: Oct 2005
Location: Langley AFB, Va (Army)
Posts: 124
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Re: 6 cyl. Auto changeover
Hello I'm in the same boat I have a 68 Surburban with MT on the floor and want it to be AT would the same go for me if I have a 2 part driveshaft? Also want to change gears at the wheel. Thanks for the time.
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#17 |
Registered User
Join Date: Jan 2007
Location: vermont
Posts: 27
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Re: 6 cyl. Auto changeover
I would like to do this too. My big question is what about the flex plate. Will a v-8 flex plate work?
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1967 K-20, 1969 K-20, 1970 C-30 dump,1971 K-20 1972 K-20, 1972 C-10, 1968 Grandprix John Deere 350c Dozer, 3414 International backhoe 1972 International 1600 Flatbed |
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