TH350 Kick Down Cable Delete

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TH350 Kick Down Cable Delete

Postby Vegabee » Sun Apr 02, 2017 10:40 pm

Developed a detent cable delete plug for my new TH350 since I don't have a bracket up by the carb and have a ratchet type shifter.There really isn't too many actual 'plugs' out there for this and many are looking for a solution.Some are tapping the hole for 7/16 plug and others are pounding in a 7/16 frost plug into the hole.Both of these are hard to do with the trans in the car and also require the pan to come off to remove the cable pull wire.My search led me to this detent cable repair kit
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Could not match the thread size of the repair ferrule for a screw on cap so used a quart bottle oil cap that has a leak proof membrane inside and cut the cap to fit the inside of the ferrule cap
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worked it into the cap with a nice snug fit
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Installed without removing the pan or lever wire.This can be removed and replaced with the detent kick down cable if desired at a later time.Filled her up with no leaks.
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Re: TH350 Kick Down Cable Delete

Postby spencerforhire » Mon Apr 03, 2017 8:33 pm

Just so everybody on here knows, this is perfectly OK on a TH350, but on an overdrive transmission(TH200R4 and TH700R4) it is an absolute no-no. On the OD transmissions, the cable is not only for kickdown, but more importantly for throttle position, and leaving it off or having it not adjusted properly will shorten the life of the trans.
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Re: TH350 Kick Down Cable Delete

Postby 75Monzta » Tue Apr 04, 2017 11:18 am

Great idea. I have a gasket punch set that may make that easier to make the seal inside.
You are absolutely correct on the overdrive. No pressure rise equals trans damage. Th350 is ok as the modulator determines engine load.
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Re: TH350 Kick Down Cable Delete

Postby Vegabee » Tue Apr 04, 2017 1:47 pm

When filling totally slipped my mind of the rubber temporary plug that was in there with the kick down wire also sticking out and ran 3/4 Qt. of Royal Purple Max ATF on the floor.A gasket or oil proof vinyl would work good with a washer or something for support on that big outlet hole.I think this part was $11 or so.
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Re: TH350 Kick Down Cable Delete

Postby Vegabee » Wed Apr 05, 2017 12:51 pm

TV cables control trans pressures on the 2004R and 700R4 and newer transmissions.These cables CAN NOT be deleted but here are some resources for proper adjustments and what those adjustments do.
http://www.tvmadeez.com/article/
http://chevyasylum.com/tech/tvcable.html
http://www.monstertransmission.com/700R ... ep_62.html
http://www.cpttransmission.com/tech_tvcable.htm
http://www.superchevy.com/how-to/65138- ... -tv-cable/
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