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Old 01-28-2005, 06:16 PM
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what does a shift kit do?

I see alot of guys run b&m shift kits.What does this shift kit do?thanks bm

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Old 01-28-2005, 06:23 PM
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Depends on the trans, but, in general they raise the shift points of the trans and quicken the time between shifts. Making a firmer shift. Some also improve internal lubrication of the unit and some cure part throttle "hunting" and convertor lockup..
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Old 01-28-2005, 06:27 PM
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Do you have to drop the tranny to install one?My transmission is a turbo 350.bm
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Old 01-28-2005, 06:27 PM
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yes

it is a good idea to drop the tranny. depending on the type of shift kit... you have small ball bearings and little springs you have to deal with so you need to be able to turn the tranny upside down.
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Old 01-28-2005, 06:43 PM
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B&M 350 turbo kits can be installed in the car. Just use light grease to hold the check balls in place, be careful and use a torque wrench on the bolts. Don't lose the "S" hook.
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Old 01-28-2005, 08:00 PM
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yeah you can install a shift kit in a TH350 while in the car, its not hard. also I believe only the transgo stuff are "shift kits", and B&M's stuff are shift improver kits... I never have used B&M but the transgo kits seam to increase line pressure, they also according to their paper " improve the shift performance and durability of the TH350 trans by furnishing additional oil to areas of warp and wear and exhausting cross leaks that often cause friction failure". they also give you different springs to adjust your governor (for shifting), and they also give you a spring for your vacuum modulator to prevent "lazy shifts" and some springs for the valves in the valve body, easiest way to get the caps of the valve body I have found is just to press on them with your thumb, and with the pin facing down, pull it out with a magnet, no need to stake it during assembly. like BOBCRMAN said, you can use light grease to hold the check balls in place during assembly (also supplied in the kit) however I use petroleum jelly, it seams to dissolve pretty quick when ATF gets on it. I highly recommend a shift kit in a car with even a mild engine if you beat on it or tow. I hope this gives you a better idea of whats involved and what it does.

-Leo-
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Old 01-30-2005, 11:52 AM
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i have the transgo stage 3 shift kit in my 350th tranny... with a solid servo and all the cushion gears have been replaced with steel. just the kit improved my shifting ten-fold. transgo is not that expensive either...
transgo sells their shift kits for $79.88 to $139.69, depending on your preference, and these prices are in summit racing's catalog.

B&M sells improver kits from $28.88. they also have the "transpak" from $53.95, and the "Transkit" from 198.95. depending on your preference.
hope this helped, and just my opinion, id go with transgo, im speaking from experiance when i say they work.
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Old 01-30-2005, 06:53 PM
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I think shift kits do a very good job at making sure all the bolts that you wanted to stay on your truck will want to leave. I think it would be more efficient to just go under your truck with a wrench and loosen each bolt to just finger tight.
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Old 02-18-2005, 03:46 PM
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Quote:
Originally Posted by Triaged
I think shift kits do a very good job at making sure all the bolts that you wanted to stay on your truck will want to leave. I think it would be more efficient to just go under your truck with a wrench and loosen each bolt to just finger tight.

I never have had that problem, what bolts are backing out, they have lock washers?
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Old 02-18-2005, 06:55 PM
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At different times I have lost 4 tailshaft bolts (there are 4 on there and I lost 2 of them at one time), one tranny mount bolt, found the other tranny mount bolt "making a break for it" about half way out at the same time (causing the engine/trans to shift back in the truck ~1"), and lost 2 bolts holding the dash in (only one of which I could find where came from). All of these bolts were not messed with after the factory put them in and were put back in with red lock-tite after cleaning the holes they went in with brake cleaner.

Am I the only one with this luck
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Old 02-18-2005, 07:31 PM
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I would rather have my tranny last longer than loose a couple bolts. The harder the shift the better it is on the tranny.
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Old 02-18-2005, 07:43 PM
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This is an interesting thread and I'd like to add a question. I have a 4L60E and used a Hypertech tuner to, among other things, improve the shift points and firm up the shifts. Frankly, I don't notice much difference. Has anyone any experience using a shift kit in one of these (or a 700R4)? Does it mess with the computer or cause it to throw DTCs?

Thanks

Dave
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