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06-06-2004, 04:31 PM
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#1 |
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Registered User
Join Date: Nov 2002
Posts: 43
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1970 th400 downshift solenoid questions
The downshift solenoid is in the transmission but no wire is hooked up to it so I have no clue where the wire should go. In 1970 C20's with the th400 was there a switch on the gas pedal that indicated throttle postion or was it on the carb? Here's a pic of a 71-72 gas pedal assembly, should I have this in mine, because I don't.
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06-06-2004, 04:40 PM
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#2 |
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member #16
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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I don't have a pic but it was on the carb. John
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors  http://www.flickr.com/photos/1745471...7602865984234/ |
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06-06-2004, 05:28 PM
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#3 |
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Registered User
Join Date: Nov 2002
Posts: 43
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Did the wire just plug in somewhere on the carb and that's it, or is there more to it?
I don't have a detent cable either, did these trannys(th400) come with one in '70? Last edited by 406cid70Chevy; 06-06-2004 at 05:41 PM. |
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06-06-2004, 05:58 PM
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#4 |
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Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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Quote from another website:
"The TH400 uses an electrical slide switch, which is controlled by the throttle linkage." Advert with pic for Hurst kickdown switch. http://www.firewheelclassics.com/det...duct_id=TRN605
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 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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06-06-2004, 06:19 PM
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#5 |
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Project Junkie! Fishing Poor!!
 
Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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You have to have a wire running to ignition unfused also. The stock set up has a wire that plugs into the cigarette lighter spot. Then it has a pig tail that the T-400 switch plugs into. The front spade on the kick-down switch goes to the transmission and the rear spade goes to the 12 volt soarce. WES www.ClassicHeartbeat.com
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06-06-2004, 07:01 PM
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#6 | |
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Registered User
Join Date: Nov 2002
Posts: 43
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Quote:
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06-06-2004, 09:10 PM
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#7 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Here is a picture of what the 70 and older kickdown switch looks like.
Jim |
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06-06-2004, 10:44 PM
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#8 |
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Project Junkie! Fishing Poor!!
Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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If you look at the picture of your kick down switch next to the carburetor. The 2 plugs that you have yellow wires going to, the one front (closest to radiator) runs down to the transmission. The one in the rear (closest to the firewall) runs to the extra plug in the pig tail for your cigarette lighter. WES www.ClassicHeartbeat.com
__________________
On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
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