Yea i searched and read all of the 6-10 posts before, and im still lost...

I have a bone stock 92 Z28 350 TPI G92 w/ Air Conditioning...

700R4...

Here is what i want to do...

Go from 1st to 2nd to Drive to OD in that order, want to be at WOT the WHOLE time, Ive read about the B&M one that once you could be in OD, let off the gas to let it shift, and the kit WONT drop it back down to D when you floor it again, ive heard that the GM one(im assuming the package that is in the B4C Police Package), will allow you to go 1st to 2nd to Drive to OD at WOT the whole time...

If the GM one is the one that i want, i want to go from 1st to 2nd to Drive to OD at WOT the whole time...

Also im kind of a new bonehead, any pics of HIGHLY detailed descriptions would be HIGHLY appreciated...

Thanks

Scott

:hail:

 

The B4C kit is the only one that will do this. The part # is on the TECH ARTICLES page down in the transmission section. Go pick one up at your local GM dealer for ~15-20 bux. You might want to get a governor recalibration kit too to control the shift points. If your car overrevs like any other stock 350tpi at WOT you can use this kit to lower the WOT shift points a little to stay in your powerband. You can get one of those at SUMMIT for around 20 bux too.

 

I dont have any over rev problems...just what i was saying...

thanks!
:hail:

 

GM also makes a modified upshift valve which it included in police packages and that part # is 8673948 and sells for around $15. This will allow the tranny to shift into OD at full throttle.

Going to pay for it tonight and get it ordered!

but i dont know what im doing, so ill have a part, and a dream!

 

That is the B4C kit that I was talking about.

 

Yea after reading a little i figured out that it was part of the B4C police package...

when i get this part, what all needs to be done? What do i have to change out? ive never even touched my transmission before, so any help will appreciated!

(pics would be best)

 

Its pretty simple. You have to pull the pan on the trans and change your 3/4 shift valve, sleeve, and spring to the new valve,sleeve, and spring in the package. It also comes with a pump boost valve and sleeve but its a .422 I think. this valve may be larger than stock but my trans had an aftermarket .471 in it that IS larger than stock so the .422 could be as well which is why they include it in the kit. A larger valve will create more fluid pressure in the trans (which is desirable to a point). Ill snap some photos when I get home in an hour or so and there will be no question as to what goes where. My trans is apart on a table right now so its quick and easy.

 

This is basically what you get in the kit. It also includes (not pictured here) the pump boost valve and sleeve which are very small unlike these pieces.

 

And these pieces (not the boost valve and sleeve) go in here. there is only 1 valve in the valvebody whose end looks like this one. The one in the kit and the stock one look the same so there will be zero confusion. I believe you must take the valvebody down to do this because there is a roll pin that you must push out (which fits into the flat groove near the end of the sleeve) from the top. Grab it with a pair of needlenose pliers and save for reassembly. Put the new stuff in just like the old came out.

 

And the pin you must push out .....

 

This is where the pump boost valve goes. I have mine separated for ease of explanation. When everything is assembled the hole in the pump on the left there will be accesable through the square hole in the case on the right. Get in there with a long nosed pair of snap ring pliers and remove the snapring. everything will then come out. replace the 2 like items -they will be the first two to come out. (3-4 items come out so reassemble in order and dont forget).

 

Recluse, Youve been a MAJOR help so far...me and my buddy started doing it tonight...but i have ran across two new problems...the car is sitting in the garage right now with the bottom half of the tranny off...

first thing...

we got the new valve in the valve body...no problem, but the other 2 parts that you dont list, where do they go?

also there was 6 silver checkballs that when changing the gasket, fell off...we found a webpage on 700r4.com that tells us where the silver ones go, but we got this slightly larger gold one that i cant figure out where it goes?

if you or anyone can give me a clue, id appreciate it...
:hail:

 

Someone explain to me why you would want to go from 1-2-OD at WOT?

Edit: Sorry, read it wrong

 

Anyone ?

 

I've got the ATSG service manual at home that shows all the check ball locations. I'm at work now but I'll recheck this post tonight and if no one has replied, I'll try to describe it for you.

 

Anyone?

 

look at this...

DO NOT worry about the text. Everywhere there is a red X is where a checkball goes.

See where it says "3/8 check ball here". That is the big copper flashed checkball for the TV something-or-another.

Don't worry about it. I hear that you don't need to put it back in. I didn't when I had mine rebuilt and it works fine.

 

this is the valve body side...

 

I believe you, but im not sure about not putting parts back in that was in there to begin with ?

 

FWIW, I have just finished (sucessfully)installing the Trans Go kit in my '93 700R4 and bought ATSG manual for reference since I'm no tranny expert. It was a very nice aid for a whopping price of about $15. Well worth the price of doing it right. Despite being as careful as I could, 3 or 4 checkballs fell out before I could see where they came from. The manual was invaluable in helping.

The location for the larger ball is correct as shown above. Interestingly, my Trans go instructions make no mention of leaving out that ball. I left it in place. The check ball with the delete note in the valve body is not present in the 88-93 tranny anyway. There is a check ball in the valve body to the lower left of the two shown. If it is in doubt as to location, I could see where the ball had slighty flattened the iron in the body.

The service manual shows all six ***** as shown above for models '82-87. For 88-93, the ball shown in the upper left of the diagram is not used.

Hope I haven't made it more confusing.

 

Ok, i found a GM service manual, we got everything all back together, when in first there is a little stutter, and going into second, at about 4k rpm it hangs for a second and then kicks back in, it seems like its slipping, we installed the new valve in the throttle body, pretty sure got all the checkballs in the same location(it said in the manual to use a little grease to get them to stay in place, so we did that)...

it just seems like the tranny is slipping a bit, we put the new boost valve in there too that came with the kit, this is the B4C kit that i got from GM...

What did we do wrong ?

It also wont shift into OD at WOT after Drive/3rd gear...

 

Recluse,
I'm the one helping Klayburn do the valve change. We put the new tv sleeve and boost valve in, got the new B4C valve in also. Everything went back together like it should. We used an 85 Camaro service manual and 700r4.com to find the check ball locations, I know the 87+ locations are a little different, thats why I crossreferenced 7004.com and the factory service manual. I put the copper flash back in the valve body as the 85 manual stated.

I noticed one of your old posts from july about you having the same 2-3 Slippage, that is exaclty whats happening on klayburns car. How many check ***** did you have total? We had 6 silver and the one bigger copper flash. I put two in the Valve body and the other 4 in the case itself. I went off of the 700r4.com diagrams.

Any help/suggestions would be appriciated at this point.

Thanks,
Brendan

 

Ill put in a little more info here to help everyone sort things out. Your answers are going to help me also as well so dont be stingy...heh heh. Anyway, my trans ran somewhat normally before the B4C package install. I did notice the 3-4 flare-up AFTER I did the install (anyone else?). For the record I did NOT install the small pump boost valve that was supplied in the kit due to the fact that the one that I found in my pump was larger (higher line pressure-better) than the valve in the kit. I also had the vette servo so I should not have had this problem. I ordered the TRANSGO kit the other day and spoke extensively with Probuilt automatics. The kit includes a plug for the separator plate to block off a fairly large hole. By doing so the band holding 2nd does not release its grip as fast as normal eliminating the RPM flare up between shifts. The kit also has a slew of other items to help accomplish this task. As for not having the car shift into 4th AT ALL......I had this problem as well. How bout that. My car would rev REALLY high in every gear no matter how hard I was steppin on it before it would shift and there was No 4th gear at all. The problem? A stuck TV valve. Pull it out and clean it. It has a tiny spring in it that allows the assembly to snap back and forth in its bore. Check it out cause it should move freely. The transgo kit contains a NEW self-cleaning valve assembly to completely eliminate this problem. Lemme know it this helped.

 

ok we are gonna take it out and take pics...

 

Well, going to put the car back to stock tonight, im not doing the B4C thing, ill do the epoxy screw thing on the other valve...

much easier, and will hopefully work