Should I add a shift kit?
Thread Starter
On The Tree
Joined: Jan 2017
Posts: 172
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Should I add a shift kit? As the title says I’m debating on adding a shift kit to my car. It’s a completely stock 4l60 and so far hasn’t had a single sign of slipping or anything. (Knock on wood). I had the trans tuned when I tuned my car and the tuner made the shift points a lot more firm so I can definitely feel it when it shift it even shifts pretty hard at half throttle. Kinda up in the air on getting a shift kit I don’t need know if it’ll be worth it or not? Also if I do install one will I have to go back to my tuner to get the transmission retuned?
TECH Junkie
Joined: May 2012
Posts: 3,050
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From: Poplarville, MS
Thread Starter
On The Tree
Joined: Jan 2017
Posts: 172
Likes: 0
Yes, if you install the boost valve that is included in the shift kit you will have to retune it. You tuner most likely raised your line pressure when it was tuned. If you add a boost valve on top of the tune your line pressure will be way too high and possibly break parts, (input drum 3-4 snap ring). If you are happy with the way it shifts I would leave well enough along.
