LS swap question on transmission kickdown?

1967 CHEVROLET IMPALA
180,000 MILES • 6.0L • V8 • 2WD • AUTOMATIC
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SNYDERMAN
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Hi, I have the car listed above that I'm swapping a 6.0 liter LQ4 into. I just watched your video "How to LS Swap - Episode 11- Throttle Pedal and Cable Transmission Cooler Lines". It's a great video! My transmission lines are all set so I watched it for the throttle linkage part which is very help full! I'm going to order those parts from Summit.

I kept the original 2 speed power-glide transmission. so now I'm trying to figure out how to connect the transmission kickdown linkage to the new system. Any help you can provide is much appreciated!
Mar 8, 2024 at 3:39 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

I just noticed you haven't had a response in a few days. I will forward your question to Ryan. Here is the one in the video. LOL

Take care,

Joe
Mar 11, 2024 at 11:49 AM
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SNYDERMAN
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Thank you, Joe. I'm looking forward to hearing from Ryan.
Mar 11, 2024 at 12:09 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,304 POSTS
The P-Glide kickdown was originally set up with a full manual linkage. Lokar makes a cable conversion that is much easier to deal with than the mechanical linkage they came with. You install the cable, then to adjust it you set it up so that when the throttle is wide open the kickdown cable is pulled tight. Be sure to connect the vacuum line from the modulator to the intake. Then you go out and test that it does downshift when you floor the throttle.
In the video you can see the lower hole that Ryan leaves empty after attaching the throttle cable. That would be where the kick down cable would connect.
Mar 12, 2024 at 10:50 PM
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SNYDERMAN
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Perfect thanks!
Mar 12, 2024 at 10:53 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,304 POSTS
You're welcome. I ran a P-Glide in my drag car for years. They can be built to handle far more power than most of the other automatics. A friend of mine was running one of the early cast iron ones in his 3-engine pulling tractor! The only real drawback for street use is the lack of a lock-up converter and any type of overdrive in stock form. There are a couple aftermarket OD units out there if you decide you want to add it. Can't add a lock up converter though because the slip in the converter is needed. You will want to add a larger cooler though. Enjoy driving that 67. I had one back many years ago, should have kept it. Mine was a Gold Sport Coupe with the 327 and a hydramatic. Beautiful car.
Mar 13, 2024 at 12:36 AM
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RYAN L
  • ✓Experienced Mechanic
  • 272 POSTS
Hey, thank you so much for watching the series!

Your build sounds awesome! Yep, just like Steve said, the bracket I used has the provisions for the kick down. Just feed it through one of those holes and attach it to the throttle body and you will be cruising in your LS swap in no time!

Link for reference:
https://www.summitracing.com/parts/icb-551446/make/chevrolet

If you have any other questions, please do not hesitate to ask. Thank you for using 2CarPros!

Best,
Ryan
Mar 13, 2024 at 3:43 AM
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SNYDERMAN
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I'm so glad I found you guys, you are awesome!
Mar 13, 2024 at 4:06 AM
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