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4l60E has a soft 2-3 shift after transgo HD2 install

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Old 02-12-2008, 11:35 PM
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Default 4l60E has a soft 2-3 shift after transgo HD2 install

I've searched around a little and couldn't find anything like what I have going on. I installed my Transgo HD2 shift kit, Corvette 2nd/Sonnax 4th servo, Sonnax servo release check valve, Transgo forward accumulator piston and I drilled the Transgo separator plate as follows, 1-2 holes to .082 and .093 for the rest. After driving it for a week everything seemed to settle in nice except for the 2-3 shift. It shifts fine under half throttle or more but seems to be pretty soft and prolonged with less throttle. It seems a little softer than stock even. Anyone have any similar experiences?
Old 02-12-2008, 11:57 PM
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I have a B&M shift kit in my 82 blazer and the 2-3 hits harder as you hit the throttle harder, like yours. But my 05 has a Dale Younger shift kit and every gear is a bang for its buck at any point in the throttle. You should be fine.
Old 02-13-2008, 12:11 AM
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I drilled the same for the 2-3 shift in my seperator plate. Under normal driving it feels stock but with WOT my 2-3 shift is hard and fast. Have you retuned after the shift kit?
Old 02-13-2008, 12:20 AM
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I went back to my stock pressure and zeroed out the shift time in both tables. I didn't want to increase the line pressure until I figured out what to do for the 2-3 shift. I can just imagine the trans taking a when I install my maggie this weeknd.
Old 02-13-2008, 01:23 AM
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Originally Posted by blue2003ls
I can just imagine the trans taking a when I install my maggie this weeknd.
Sorry to say man but if your going to use the maggie the way it was ment to be used (or the way you want to use it) start looking into a built trans now. As for your 2-3 shift that is soft with less throttle after the HD-2 install, I would not worry to much about it.
Old 02-13-2008, 08:31 AM
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I have come to accept the fact that I will probabaly need a FLT level 5. I just wanted to get another year out of this one before I do it.
Old 02-13-2008, 08:33 AM
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My shift kit does the same thing on the 2-3 shift....
Old 02-13-2008, 02:47 PM
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Originally Posted by BlackGMC
My shift kit does the same thing on the 2-3 shift....
How many miles do you have on the trans since the install?
Old 02-13-2008, 02:48 PM
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~400.....
Old 02-13-2008, 02:52 PM
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Sorry I did not fully read your post my 2-3 is quick at all load levels, it is not jolting like the 1-2 shift just softer and quicker.... BTW what did you do with your TM?


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