Overdrive kick-down switch bracket for straight six - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sfcharr · 04-25-2019, 07:38 PM

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?

geezer#99 · 04-25-2019, 10:37 PM

What overdrive are you talking about?

sfcharr · 04-26-2019, 07:58 AM

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

**NewBayColony** · 04-27-2019, 08:00 AM

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.

sfcharr · 04-27-2019, 10:15 AM

I have everything to complete. Need to fab the bracket, then mount the relay, hook the harness up, should be ready for testing.

sfcharr · 04-29-2019, 09:30 PM

Ttt

**NewBayColony** · 05-01-2019, 07:23 AM

**NewBayColony** · 05-01-2019, 07:24 AM

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**NewBayColony** · 05-01-2019, 07:24 AM

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**NewBayColony** · 05-01-2019, 07:26 AM

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Sorry it took so long to do this. Hope this helps.
What gear oil did you use in your transmission?

**NewBayColony** · 05-01-2019, 07:29 AM

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sfcharr · 05-01-2019, 08:23 AM

Thank you so much! I assume this bracket was bolted to the base of carb?

**NewBayColony** · 05-01-2019, 08:31 AM

Quote:

Originally Posted by sfcharr

Thank you so much! I assume this bracket was bolted to the base of carb?

I don't know. I got it like this. I sure looks lie it but again I think it came off of a 283.
What gear oil did you use in the transmission? Did you find an original relay?

sfcharr · 05-01-2019, 08:51 AM

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.

**NewBayColony** · 05-01-2019, 09:13 AM

Quote:

Originally Posted by sfcharr

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.

Thanks.

04-25-2019, 07:38 PM	#1
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	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.

04-25-2019, 10:37 PM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,522	Re: Overdrive kick-down switch bracket for straight six What overdrive are you talking about?

04-26-2019, 07:58 AM	#3
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	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

04-27-2019, 08:00 AM	#4
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	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. __________________ 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)

04-27-2019, 10:15 AM	#5
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	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.

04-29-2019, 09:30 PM	#6
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	Re: Overdrive kick-down switch bracket for straight six Ttt

05-01-2019, 07:23 AM	#7
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	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)

05-01-2019, 07:24 AM	#8
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	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)

05-01-2019, 07:26 AM	#10
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	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? __________________ 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)

05-01-2019, 07:29 AM	#11
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	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)

05-01-2019, 08:23 AM	#12
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	Re: Overdrive kick-down switch bracket for straight six Thank you so much! I assume this bracket was bolted to the base of carb?

05-01-2019, 08:51 AM	#14
sfcharr Registered User Join Date: Aug 2010 Location: Castle Rock CO Posts: 76	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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