71 TH400 kickdown - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sgt1022 · 03-01-2015, 10:20 AM

I have a 71 c10 custom deluxe with a 350 and a th400. The PO put an Edelbrock carb on it. I have no tranny kickdown. I looked at Lokar's kit but it shows a two prong plug. I checked my tranny and saw only one spade connecter. Any ideas?

**FirstOwner69** · 03-01-2015, 11:12 AM

Quote:

Originally Posted by sgt1022

I have a 71 c10 custom deluxe with a 350 and a th400. The PO put an Edelbrock carb on it. I have no tranny kickdown. I looked at Lokar's kit but it shows a two prong plug. I checked my tranny and saw only one spade connecter. Any ideas?

I put the Lokar on my 69 with TH400 and 350/Holley. It's designed to work with either style connector on the trans. In fact, only one spade goes to the trans.

EDIT: Here's a link to the installation instructions. http://lokar.com/downloads/pdf-instr...ElectricKD.pdf See Fig. 7.

adricar1 · 03-01-2015, 11:14 AM

Just use a spare extra brake light switch with a bracket to the throttle bracket in the cab, cheap and hidden out of the way. connect one end to the th400 and the other to the power feed.

JimKshortstep4x4 · 03-01-2015, 11:22 AM

In 71 the kick down switch is located inside the cab on the accelerator pedal. There are two wires going to the switch, one is power the other goes to the transmission solenoid on the side of the transmission.

Jim

sgt1022 · 03-01-2015, 06:11 PM

Firstowner69 what part number did you use.

SS Tim · 03-01-2015, 06:29 PM

If you are trying to figure out one or two pins at the trans. connector this wil help.

http://67-72chevytrucks.com/vboard/s....php?p=7037666

Since you are retrofitting a TH400 just install the 71-72 style detent switch on the accelerator pedal and run a couple of wires or buy a harness for a 71-72 and be done with it. No need to install an aftermarket cable switch when stock (as on a big block TH400 or C30 installation) is easily done.

**FirstOwner69** · 03-01-2015, 06:41 PM

Quote:

Originally Posted by sgt1022

Firstowner69 what part number did you use.

I believe it was KD-2400HT. Have you checked to see if the original switch is still on the firewall as shown in a picture above. My 69 used a switch on the intake for use with a quadrajet that would not work with the Holley. As stated above an original 71 switch should work with your Edelbrock.

*gmachinz* · 03-01-2015, 06:49 PM

I have a 1969 carb mounted TH400 kickdown switch and wiring if you wanna go that route. PM me if you want pics.

03-01-2015, 10:20 AM	#1
sgt1022 Registered User Join Date: Oct 2013 Location: Palmetto, FL Posts: 107	71 TH400 kickdown I have a 71 c10 custom deluxe with a 350 and a th400. The PO put an Edelbrock carb on it. I have no tranny kickdown. I looked at Lokar's kit but it shows a two prong plug. I checked my tranny and saw only one spade connecter. Any ideas?

03-01-2015, 11:14 AM	#3
adricar1 Registered User Join Date: Sep 2013 Location: United kingdom Posts: 127	Re: 71 TH400 kickdown Just use a spare extra brake light switch with a bracket to the throttle bracket in the cab, cheap and hidden out of the way. connect one end to the th400 and the other to the power feed. __________________ GMC K1500 1971 350 cu in th350 4wd Bondo Bob c 10 1971 stepside th 350 c10 1970 350 cu in manual air con stepside.

03-01-2015, 11:22 AM	#4
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: 71 TH400 kickdown In 71 the kick down switch is located inside the cab on the accelerator pedal. There are two wires going to the switch, one is power the other goes to the transmission solenoid on the side of the transmission. Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

03-01-2015, 06:11 PM	#5
sgt1022 Registered User Join Date: Oct 2013 Location: Palmetto, FL Posts: 107	Re: 71 TH400 kickdown Firstowner69 what part number did you use.

03-01-2015, 06:29 PM	#6
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: 71 TH400 kickdown If you are trying to figure out one or two pins at the trans. connector this wil help. http://67-72chevytrucks.com/vboard/s....php?p=7037666 Since you are retrofitting a TH400 just install the 71-72 style detent switch on the accelerator pedal and run a couple of wires or buy a harness for a 71-72 and be done with it. No need to install an aftermarket cable switch when stock (as on a big block TH400 or C30 installation) is easily done. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

03-01-2015, 06:49 PM	#8
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: 71 TH400 kickdown I have a 1969 carb mounted TH400 kickdown switch and wiring if you wanna go that route. PM me if you want pics.



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