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#1 |
Registered User
Join Date: Jun 2010
Location: Lafayette , La
Posts: 404
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3 speed overdrive guys need some help
Ok been doing a lot of searching but nothing.
My issue is I have a 66 truck with a non syncro 3 speed and I'm converting to a syncro 3 speed od. I want to keep the shift on the column. The first shift rod is fine but the rear one is farther back. I picked up some shift rods for a 72 column shift truck thinking it would be a bolt in job. But the rear rod doesn't clear the shift fork. So now I'm thinking of just extending my original one to fit. Has anyone come across this issue before? Please chime in Posted via Mobile Device
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1966 Chevy C10 Stepside 355ci sbc with 3speed OD 2021 GMC Sierra 1500 AT4 6.2 1980 Chevy Camaro z28 383ci 1990 Chevy Suburban 350 tbi 2x4 (sold) 1984 Chevy C10 sliverado short fleet 1997 Chevy C1500 short fleet |
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#2 |
Registered User
Join Date: Jan 2010
Location: Evensville, TN
Posts: 236
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Re: 3 speed overdrive guys need some help
When I was doing the swap like you, but without the OD, I picked up a set of shift linkages from an old truck, I think a 27, that had a syncro transmission in it and they worked fine. I don't think you can rebend the old rods far enough to make them work. FYI I paid $25 for both rods and all of the connecting bolts and bushings.
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#3 |
Registered User
Join Date: Jun 2010
Location: Lafayette , La
Posts: 404
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Re: 3 speed overdrive guys need some help
(27) I guess you mean 72? well thats what I have and its not clearing the shift fork for some reason.
anyone else have some answers?
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1966 Chevy C10 Stepside 355ci sbc with 3speed OD 2021 GMC Sierra 1500 AT4 6.2 1980 Chevy Camaro z28 383ci 1990 Chevy Suburban 350 tbi 2x4 (sold) 1984 Chevy C10 sliverado short fleet 1997 Chevy C1500 short fleet |
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#4 |
Registered User
![]() Join Date: Aug 2010
Location: Burbank CA
Posts: 3,055
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Re: 3 speed overdrive guys need some help
You are taking me back about thirty years to my first truck, but I did that swap too (but w/o OD). To make it work, I remember buying rods like the syncro trans came with and grafted the lower portion of those to the upper portion of the truck's orig rods. Actually, I personally could not make it work (young and stupid) so I took it to a trans shop and they did it. You are not going to like this, but it never worked that well. I mean, it shifted from gear to gear, but the linkage seemed to have too much flex and twist so it never felt solid.
Not sayin' a great fabricator couldn't do it right, but I was not happy with mine. I sold the truck before that issue got sorted out. I know, lotsa help I am. ![]() |
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#5 |
Registered User
Join Date: Jun 2010
Location: Lafayette , La
Posts: 404
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Re: 3 speed overdrive guys need some help
well actually that did give me a idea Thanks oem4me. Im looking for any advice.
if I cant get it like I want it, I guess I'll have to settle for a floor shifter but I think column shift is just cooler. Plus its original
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1966 Chevy C10 Stepside 355ci sbc with 3speed OD 2021 GMC Sierra 1500 AT4 6.2 1980 Chevy Camaro z28 383ci 1990 Chevy Suburban 350 tbi 2x4 (sold) 1984 Chevy C10 sliverado short fleet 1997 Chevy C1500 short fleet |
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#6 |
Registered User
Join Date: Jan 2010
Location: Evensville, TN
Posts: 236
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Re: 3 speed overdrive guys need some help
You are right 27 is 72. It was not easy to get them adjusted but so far it has been worth it.
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#7 |
Registered User
Join Date: Jun 2010
Location: Lafayette , La
Posts: 404
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Re: 3 speed overdrive guys need some help
actually those ones i have are from a 72 GMC truck but I believe at that time GMCs had chevy drive trains. I'll do some test fitting on saturday hopefully i'll have some luck, T2vigil
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1966 Chevy C10 Stepside 355ci sbc with 3speed OD 2021 GMC Sierra 1500 AT4 6.2 1980 Chevy Camaro z28 383ci 1990 Chevy Suburban 350 tbi 2x4 (sold) 1984 Chevy C10 sliverado short fleet 1997 Chevy C1500 short fleet |
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