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#1 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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700r4 lockup wiring
Does anyone have any suggestions for what brand and type of lockup wiring to get for my transmission? I know there are lockup kits that rewire the inside of the tranny, and there are those that connect from the outside connector. I know the brands like TCI, Bowtie overdrives, Lokar, and B&M all have different types of wiring to lock up the converter, and when, and how it locks up.
Currently this is the inside of it, and it has a broken wire jacket. I don't know if this is fixable because of the tranny fluid or not. I know that i can solder the wire together if it's broken, for strength, then put some heat shrink tubing over it to protect it. Any help would be appreciated. Thank you! |
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#2 |
Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,269
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Re: 700r4 lockup wiring
Of course all of the ones you named in the post are reputable copanies, I like the products from both TCI and B&M they have always done what they were supposed to do when needed. Are'nt they mostly based off of a vaccum switch and a brake switch?
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#3 |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,487
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Re: 700r4 lockup wiring
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I used the Bowtie Overdrives kit on my 2004R. Pretty straight forward and works well. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#4 |
Senior Member
![]() Join Date: May 2002
Location: Hammond, WI
Posts: 1,804
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Re: 700r4 lockup wiring
This is what I did, and it uses all GM equipment.
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Mike 2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip 1972 Chevy Suburban - Turquoise/Black 1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD ![]() Using your turn signal is not "giving information to the enemy" 67-72 FAQ |
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#5 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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Re: 700r4 lockup wiring
Thank you for the replies! I like the article, and I may use the bto kit because I already have the tv ez kit for the Carb.
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#6 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: 700r4 lockup wiring
You want a kit that has a brake switch that UNLOCKS the TC when you hit the brakes. I did not have one of these and almost wrecked my truck when it stalled when a b-hole pulled out in front of me. The BTO kit has the brake switch, it just taps into your existing brake wire under the dash.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#7 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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I have the B&M shifter kit. I have no brake switch wiring and never had any issues. I also have it where I can lock it are unlock it with a toggle switch. Tow mode if you will.
The B&M kit is for 45MPH lock up in overdrive only so if you drop below 45MPH it will drop out and so far 15 years I have never had any problems. I can back up and easy around in 35 MPH speeds with no problems. ![]() ![]()
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#8 |
Registered User
![]() Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: 700r4 lockup wiring
Excuse me for asking a few related questions here. I don't want to hijack the thread by any means.
My 700R4 is supposed to have the ability to lock the converter in 4th. I was told it was wired for it from the shop that built the tranny. I haven't wired any electrical to it though. So here are the questions any benefit to locking or leaving unlocked? will it just require 12 volts to the external connector to lock it? How can I test the lock? will feeding it too much power while locked kill the converter? How much current should the lock use? should I keep it "unlocked" while taking off or accelerating hard? Thanks in advance and sorry for stealing.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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#9 |
Registered User
Join Date: May 2007
Location: Pennsylvania
Posts: 99
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Re: 700r4 lockup wiring
Find a 1985 or 86 Gm pick- up,blazer or suburban and remove the vacuum switch and bracket from the firewall, near the brake booster;the brake switch and bracket under the dash and the harness that connects the two switches to the side of the trans. This all usually costs less than $10.00, is the correct parts, is super simple and only needs one fused switched feed. I did it on my 68, works great, only paid $5.00!
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#10 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: 700r4 lockup wiring
so many choices...
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#11 |
Registered User
Join Date: Nov 2012
Location: LaGrange KY
Posts: 9
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Re: 700r4 lockup wiring
can you use the same shifter or do you need to change shifters
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#12 |
Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,457
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Re: 700r4 lockup wiring
no need to change the shifter and for the brake switch get one for a late 80s truck and it will have the extra conections that are needed
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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#13 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: 700r4 lockup wiring
Same shifter if stock column shifter. Aftermarket floor shifters will sometimes have a replaceable gate with 4 forward gears instead of 3
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