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#1 |
Registered User
![]() Join Date: Aug 2010
Location: Castle Rock CO
Posts: 76
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Overdrive kick-down switch bracket for straight six
I am trying to get my overdrive transmission working as designed but I'm missing the kick-down switch and bracket. Does anyone have a picture of the bracket? I am good a fabricating but would like an idea as to where to start. My searches for this bracket has come up empty, 250 straight six.
thanks in advance Anyone have a picture or a diagram? Last edited by sfcharr; 04-29-2019 at 09:30 PM. |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,605
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Re: Overdrive kick-down switch bracket for straight six
What overdrive are you talking about?
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#3 |
Registered User
![]() Join Date: Aug 2010
Location: Castle Rock CO
Posts: 76
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Re: Overdrive kick-down switch bracket for straight six
It's a Muncie, 3 speed. With a a non-syncro 1 gear. I am trying to get it operating as it was designed, at least as close as I can get it. I just need some ideas on the kick-down bracket
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#4 |
Senior Member
![]() Join Date: Mar 2017
Location: Northbridge,MA
Posts: 494
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Re: Overdrive kick-down switch bracket for straight six
I am doing the same project later this summer. I have a 72 with a 292 so it should be close to the same. How far along are you?
I have a kickdown switch and bracket but the bracket is for a 63 Impala I believe was a 283. judging from the oily film on it, it was mounted on the carb. I was thinking of mounting it on the bracket the gas pedal is mounted on so it comes in contact with the cable. I'll send you a picture of the switch and bracket later.
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#5 |
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![]() Join Date: Aug 2010
Location: Castle Rock CO
Posts: 76
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Re: Overdrive kick-down switch bracket for straight six
I have everything to complete. Need to fab the bracket, then mount the relay, hook the harness up, should be ready for testing.
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#6 |
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![]() Join Date: Aug 2010
Location: Castle Rock CO
Posts: 76
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Re: Overdrive kick-down switch bracket for straight six
Ttt
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#7 |
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Location: Northbridge,MA
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Re: Overdrive kick-down switch bracket for straight six
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#8 |
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Re: Overdrive kick-down switch bracket for straight six
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#9 |
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![]() Join Date: Mar 2017
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Re: Overdrive kick-down switch bracket for straight six
__________________
72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#10 |
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Location: Northbridge,MA
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Re: Overdrive kick-down switch bracket for straight six
Sorry it took so long to do this. Hope this helps. What gear oil did you use in your transmission?
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#11 |
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![]() Join Date: Mar 2017
Location: Northbridge,MA
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Re: Overdrive kick-down switch bracket for straight six
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#12 |
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Location: Castle Rock CO
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Re: Overdrive kick-down switch bracket for straight six
Thank you so much! I assume this bracket was bolted to the base of carb?
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#13 | |
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Re: Overdrive kick-down switch bracket for straight six
Quote:
What gear oil did you use in the transmission? Did you find an original relay?
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#14 |
Registered User
![]() Join Date: Aug 2010
Location: Castle Rock CO
Posts: 76
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Re: Overdrive kick-down switch bracket for straight six
I believe I used GL1 gear oil as recommended by online sources. The relay I have to use is a Standard Motor Products RY12 Relay. I have converted the engine to electronic ignition and have been told this is the relay to use for this setup.
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#15 |
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![]() Join Date: Mar 2017
Location: Northbridge,MA
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Re: Overdrive kick-down switch bracket for straight six
Thanks.
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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250, overdrive, six cylinder |
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