Anybody know what this is? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

K10Kent · 05-24-2017, 10:22 PM

Still doing my rewire and learning a lot. Anyone know what this Black and Tan electrical piece is?

**FirstOwner69** · 05-24-2017, 10:24 PM

71/72 TH400 trans kick down switch.

K10Kent · 05-24-2017, 10:37 PM

Weird. I don't have a TH400. I don't know ANY history on this truck really, but I'm surprised to hear that. I guess it does no good to have it there with a TH350?

**Boog** · 05-24-2017, 10:38 PM

yes it is.

K10Kent · 05-24-2017, 10:41 PM

I've never run across a kickdown switch but I'm guessing when you push the pedal to the floor this would downshift? Was this a standard feature with TH400?

**truckster** · 05-24-2017, 10:54 PM

Quote:

Originally Posted by K10Kent

I've never run across a kickdown switch but I'm guessing when you push the pedal to the floor this would downshift? Was this a standard feature with TH400?

Yep. Electrical rather than mechanical kickdown.

**FirstOwner69** · 05-24-2017, 10:58 PM

It was standard. Before 1971, the switch was different and carb mounted. For reference, this picture shows the pre-1971 switch, outlined in yellow, and the shoe/plate/actuator (not sure of what it's called) outlined in blue.

**FirstOwner69** · 05-24-2017, 11:10 PM

This shows how yours would have been mounted.
http://67-72chevytrucks.com/vboard/s...09&postcount=4

05-24-2017, 10:22 PM	#1
K10Kent Registered User Join Date: Jun 2016 Location: Enid Oklahoma Posts: 78	Anybody know what this is? Still doing my rewire and learning a lot. Anyone know what this Black and Tan electrical piece is? Attached Images

05-24-2017, 10:24 PM	#2
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,839	Re: Anybody know what this is? 71/72 TH400 trans kick down switch.

05-24-2017, 10:37 PM	#3
K10Kent Registered User Join Date: Jun 2016 Location: Enid Oklahoma Posts: 78	Re: Anybody know what this is? Weird. I don't have a TH400. I don't know ANY history on this truck really, but I'm surprised to hear that. I guess it does no good to have it there with a TH350?

05-24-2017, 10:38 PM	#4
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 12,957	Re: Anybody know what this is? yes it is. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

05-24-2017, 10:41 PM	#5
K10Kent Registered User Join Date: Jun 2016 Location: Enid Oklahoma Posts: 78	Re: Anybody know what this is? I've never run across a kickdown switch but I'm guessing when you push the pedal to the floor this would downshift? Was this a standard feature with TH400?

05-24-2017, 10:58 PM	#7
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,839	Re: Anybody know what this is? It was standard. Before 1971, the switch was different and carb mounted. For reference, this picture shows the pre-1971 switch, outlined in yellow, and the shoe/plate/actuator (not sure of what it's called) outlined in blue. Attached Images Last edited by FirstOwner69; 05-24-2017 at 11:03 PM.

05-24-2017, 11:10 PM	#8
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,839	Re: Anybody know what this is? This shows how yours would have been mounted. http://67-72chevytrucks.com/vboard/s...09&postcount=4



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