C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Shift kit?

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Old Jun 4, 2010 | 06:56 PM
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Anyone put a shift kit in their a4 when it was rebuilt, mine is in the process of the rebuild and am wondering if it would be a good idea, heard the shift is firm and not sure if I would like it.
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Old Jun 4, 2010 | 07:15 PM
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I have a stage 2 shift kit in my C4. I can very easily chirp the tires from 1-2. 1-2 shift is quite hard. Good for racing, but you might get tired of it for street use. I give all of my passengers "the disclaimer" before they get in.
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Old Jun 4, 2010 | 08:06 PM
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When I had my transmission serviced I went ahead and had them put in a shift kit. The first test drive the guy said was way to hard on the shift points so he changed it to what it presently has. It has a firm shift, but not to bad, actually I like the way it shifts now and is more enjoyable to drive I think, maybe because it will chirp the tires between 1-2 shift...and that's with the crossfire motor.. I say if your thinking about I would do it. I don't regret it all...
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Old Jun 4, 2010 | 09:20 PM
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If it is at a shop, you will only regret not having them do it right away.
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Old Jun 4, 2010 | 09:37 PM
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I also chose the shift kit. My 89 has the 3.07 rear axle. The first to second hits pretty hard. "I love it"
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Old Jun 4, 2010 | 10:03 PM
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I do autocross it and its not a dd so I am going to go with the kit baseing it off the info from all of you. Thanks, Kim.
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Old Jun 4, 2010 | 10:09 PM
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Originally Posted by Red.
I have a stage 2 shift kit in my C4. I can very easily chirp the tires from 1-2. 1-2 shift is quite hard. Good for racing, but you might get tired of it for street use. I give all of my passengers "the disclaimer" before they get in.
BINGO, Spot on. I wish I had not put mine in.
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Old Jun 5, 2010 | 12:57 AM
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Originally Posted by kimmer
If you don't like it take it out it's not a big deal. My installer said if I don't like it he'l take back out for no charge.
You won't like it, you'll love it. My other one had it, and I loved it.
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Old Jun 5, 2010 | 02:51 PM
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Originally Posted by kimmer
Does this change the shifting patteren or does it remain the same, being 1 down and go up in the other gears.
Shift pattern and rpm remain the same. In some cases, a shift kit will reuire a bigger boost valve, and that could affect the shift rpm, increasing it slightly. If that were to occur, it would be minor, and likely better. L98's, and LT1's have somewhat low shift points from the factory.
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Old Jun 5, 2010 | 02:52 PM
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Originally Posted by kimmer
Does this change the shifting patteren or does it remain the same, being 1 down and go up in the other gears.
Everything is the same, just the pressure of the shifts are more intense, and they say it is better for the trans, because of less slippage between shifts.

I bought on e for this car too, I just have not installed it yet.
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Old Jun 5, 2010 | 11:50 PM
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Originally Posted by pologreen1
Everything is the same, just the pressure of the shifts are more intense, and they say it is better for the trans, because of less slippage between shifts.

This is true. Most auto transmissions have a certain amount of overlap between gears, which makes for a smoother shift. While this is more comfortable, it also wears the transmission down quicker. A shift kit decreases the amount of overlap, so the shift is much more direct and sharp. While this can be less comfortable for daily use, there is less wear on the tranny and it helps with quicker 1/4 mile times.

My C4 is mildly modded(mild cam, aluminum heads, headers, straight pipes) and still has the Ceasefire injection, but accelerates to 100km/h in about 5.5s with the stage 2 shift kit. It'd go even faster with the stage 3, but I think those are manually shifted and even more hard and direct. I'd say the stage 2 is a good choice, but if you're worried your wife/girlfriend/SO will complain about the hard shift, maybe a stage 1 is best.
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Old Jun 6, 2010 | 12:07 PM
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Should have come from the factory this way. IMO
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Old Jun 6, 2010 | 07:30 PM
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Originally Posted by Red.
It'd go even faster with the stage 3, but I think those are manually shifted and even more hard and direct.
I have full manual in the gears and auto in D.
While the low rev , light throttle 1-2 shift is a bit rough in D , heavy throttle in D gives instant and smooth shifts.
In 1 and 2 I can manually shift up or down like a stick ( or downshift from D or O/d ) within the limitations of the engine
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Old Jun 6, 2010 | 11:07 PM
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Originally Posted by rickreeves1



Should have come from the factory this way. IMO
Yes, but then all the softies would be complaining. While I don't think it should be standard from the factory, it would make a great option.
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Old Jun 7, 2010 | 12:19 AM
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Originally Posted by rodj
I have full manual in the gears and auto in D.
While the low rev , light throttle 1-2 shift is a bit rough in D , heavy throttle in D gives instant and smooth shifts.
In 1 and 2 I can manually shift up or down like a stick ( or downshift from D or O/d ) within the limitations of the engine
Which kit do you have, I assume this is the more complex kit. I bought the cheapo B&M for this car with a choice of only RV/performance.

I would like the most aggressive possible. I have looked in to transgo stage kits, but I have never experienced them to know how much different they are from B&M.

Thanks
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Old Jun 7, 2010 | 11:02 AM
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Transgo kit in mine. I like it. Your transmission guy should be able to adjust the firmness of the shift points to the degree your after.

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