I have a 91 Z28 with a 700-R4. Now the problem is when I have the car in D or overD it seems like it slips into neutral. The first and sencond gear seem fine. I think its going into neutral because soon as it shifts out of second its just revs and won't accelerate. What could be the problem?

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91 Camaro Z/28 5.7
SLP catback
SLP runners
SLP 1 5/8" headers
TPIS airfoil
Thermomaster chip/160 degree thermostat
gutted airboxes/K&N filters

 

Sorry to be the bearer of bad news, but it sounds like you've lost the 3-4 clutch pack. Sounds like you need a rebuild.

This is a common problem with the 700-R4.

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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech

 

Is it the same if it slides from 2nd to 3rd? Is there a 2-3 clutch pack? Mine shifts great 1-2 with Transpak. Chirps the tire (not tires ) from 1-2, kinda slides into 3rd though. Is that bad, or should I just wait until it gets really bad? I got future plans for an engine swap, so maybe I should wait and rebuild/upgrade the tranny then anyway?

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92 RS w/t-tops 305 TBI Auto.
170K miles and don't burn a drop o'oil
-K&N Truck filter #1500 w, open ele.
air cleaner
-Dynomax 2 1/2" cat-back
-B&M TransPak
-Jet Stage2 Chip
-180* T-Stat w/ 185* Fan Switch
-JVC CD--Alpine speakers & 4ch. amp
Rockford 2ch. to 2 MTX 12" subs

 

Yup, your 3-4 pack is toast. As for a 2-3 pack, no the 3-4 pack IS engaged on the 2-3 shift. Yours is just on the way out too. Next time I would go with the TransGo stuff instead.

[This message has been edited by transfixleo (edited May 28, 2001).]

 

Well it did this before I put the TransPak in. I've only had the TransPak in for about 6k miles. I favor B&M. Have had lots o' good experiance with B&M. I know, it's controversy to what everyone else says on here. Sorry B&M 4ever.

 

So... the B&M O/H and VB Kit didn't fix it?

OK, I'm done gloating now. Did you change the teflon rings on the Input Shaft? Did you check the condition of the bore that the Input Shaft rides in? How about the bushing in the back of the pump stator? Did you check to see if the input shaft is cracked? Is the checkball in the Servo assy. seating properly? Is the checkball in the Input Housing for the 3-4 Piston sealing? Did you aircheck the drum with low pressure? These are just a few of the problems you run into on these.



[This message has been edited by transfixleo (edited May 29, 2001).]

 

I didn't put in the TransPak to try and fix the problem. I didn't even know the tranny had the problem until I had fixed the throttle cable, tuned it up, changed O2 sensor, new shocks/struts/brakes/tires, and then added the TransPak. BTW, the TransPak is not an overhaul kit. All it is, is a shift kit w/filter. Das all.

Anyway, since your done gloating , I definately ain't sayin' I know about trannies or servos, or accumulators and stuff. All I'm saying is that the car didn't have any ***** when I first got it ('bout a yr ago) so the slipping never showed. The throttle cable was not happy in the housing, so it decided to take a shorter path to the TB. Well the housing wanted it to stay in, so they started fighting each other and the TB got the "short end" of the deal. LOL One of these days I'm gonna put my 355 in and have plans to change the tranny with it, or HAVE mine rebuilt. (HAVE being the key word there.) I tried that in H.S. in shop class and walked out dizzy every day for two weeks. You tranny guys are a rare breed.

I just wanted to know about how many more miles I can get outta this one as long as I keep the 305 in there? That's all. If I knew the tranny was going, I wouldn't have even put in the TransPak. I may be dumb, but I'm not stewpid! HEHE!!

Thanx for yur help and anymore you will give,
AJ

 

Well, my 84 has had some weird 3-4 shifting problems for about the last 30,000 miles, and it hasn't gotten worse (I think it's more like a check ball or leak, or something because it will just freewheel for a sec, and other times it shifts really nicely), BUT, it sounds like you're getting some slipping and burning the clutches a bit, so I'd say it won't last a really long time.

As for the Transpak, I don't see why you would contradict yourself. You say you think it is great, then say that you really don't know that much about tranny's. Well, listen to the guys that know about tranny's, the B&M is not junk or anything, but the Transgo is sooooo much better. I'm not trying to anger you, or flame you, or even get you to give up your Transpak, but I just think that if you knew much about transmissions, you'd understand what we're saying about the transgo kits.

Again, I'm NOT trying to flame you, just share my opinion!

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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech

 

Well what is the diff between a shift kit, and a shift kit. And when you say I know nothing about trannies, I do know about them, and the results I got from the B&M, plus their torque converters I've used, shifters, etc. What I was saying is that I don't know VERY well, how to rebuild them, nor do I have the patience. As I said, I learned stuff in classes, it just don't interest me, that's all.

Also, I am not getting into any debates about product names. As far as I'm concerned, they all have their pitfalls. Look at GMs brakes, and TRANNIES (this one anyway) for example. SUCKY! Who makes the best production rearend, FORD!! Etc., etc. Product names are not an issue for me, it's how they treat their customers that matters to me. I have had a lot of good help from B&M. That's all. I'm not saying that their products are "better" than anyone else's. I will never buy from a company that treats me like a dollar bill instead of a customer. I don't know all that much about TransGo, so why would I switch? Just cause I heard someone else's opinion?

I ain't flamed either, just not convinced I guess. Convince me. Give me proof, or give me death!! HEHE

 

Ok, I see your point. I have heard some great things about how TransGo help people out, so I would not hesitate to use their products.

I didn't mean to imply that you didn't know about tranny's, but I got the idea that you would rather not bother knowing more than you absolutely need to. I used to be that way myself about auto tranny's!

I guess the other part of what I'm trying to get across is, TransGo has a reprogramming kit, which would be much better than their own, or anybody else's shift kit. I guess I was comparing apples to oranges. The reprogramming kits are more expensive, and they do more for you. Maybe B&M's TransPak includes the same stuff.

By the way, thanks for not getting bent outta shape when I questioned your opinion, I know I do sometimes!



------------------
Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads look good, (just sitting there doing nothing!LOL))

Starting to look like the Kicker poster child!

ASE Certified Master Tech

 

I am a tranny professional and and I have seen many trannies break parts due to the design of the B&M Kit (they do NOT have a Shift Kit, by the way). It is a simple approach, block off or limit the shift smoothing devices, jack up the pressure and hog out the feed holes. This is their universal approach and apparently it has made a lot of people happy, or they have great PR.

The TransGo approach, since 1959 has been to research a tranny to find out what it's weak points are and what it will take to correct those. They prove that they have found the cause/fix by doing A/B/A comparisons. If they can't move the problem in and out and back then they re on the wrong track. They do not approach a tranny with any preconcieved notions, even with similar units (700 and 4L60E for example). What they come up with is put into the Shift Kit and by the way, these could be used in your Grandmothers car, it is NOT about hard shifts! The Reprogramming Kit is an extension of this. They take the fixes found and add to the tranny higher HP/HD capacity but still with the intention of extending the life of the tranny. This is a KEY difference. Most people (including those in the tranny business) still think a hard shift means longer life and often it can mean the opposite. Not that the TransGo Repro Kit won't give you the firm shift but I have heard people complain (even when it was other things that were limiting the firm shift such as Torque converter stall too high or high rear end gearing) that it didn't HIT hard enough. They usually stop complaining when the tranny just keeps working and working. I thought maybe the insight from someone who has installed at least hundreds of TransGo Kit's and has worked on thousands of trannies of all types, might help. I have also seen the results of the B&M approach too, many many times.



[This message has been edited by transfixleo (edited May 31, 2001).]

 

I agree with transfixleo on this, I have seen many transmissions of B&M, Art Carr, TCI, GER, Fairbanks, Premier, etc, in the last 24 years and they all have one thing in "common", they block accumulators (shock asorbers), drill large feed holes where not necessary, do not do any of the updates, (and they call this "Hi-Performance") use Allomatic type of clutches, relined bands of inferior grade (not even to OEM specs, more or less Hi-Performance specs) Etc. Just once, I would love to see the "steak" instead of the "sizzle". (I am still waiting). This just speaks so bad of the "so-called Hi-Performance industry". I wish I could say something different, but I can not. I am so tired of seeing people being "ripped off", not getting what they think they payed for, when having a "problem with their transmission", no help can be found or offered, no solution forthcoming, no phone calls, etc., etc., etc. There are some exceptions to this.
Hope This Helps!!!

 

I thank you guys for all the info you give. I went through 2 tranny's last year. The first one cost me $1500 to rebuild and it only lasted 5 weeks. The planetary gear came apart and spit the shavings through the whole thing. They wouldn't warranty it(never get work done by someone you know)so I got stuck with another bill for $1100. This tranny I have now is soggy 1-2 but will burn tires 2-3. The 2-3 shift is about 2000RPM's too low for some reason but atleast i can drive the car.

I have been screwed hard over this and I am on the hunt for another tranny to get built. I have learned a lot and the info i learn in here is going to help me cover my butt next time. I just want to say thanks!

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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit 3.42 rearend
Autometer shiftlight tach and B&M mega shifter
One sweet sounding system

 

Oh yea. Me too. I want to say thanx. I never am opposed to learning more (especially about trannys) . I guess when I bought the B&M kit, that's all I really wanted was the chirp. Like I said, the motor has no guts, and I really don't care if the tranny in there blows. It'll just be easier for me to talk my wife into me getting a "new" one. You guys know what I'm really up too. HEHE!!

Hey transfixleo, isn't it you that sells built ones? I've read about someone on here that does, and that they do quality, af-FORD-able work. (Just had to do that!!! ) But seriously, I would give you some thought when it comes time. I already like your PR. You didn't badger me like some other people on here have.

 

Simple questions to this thread.
I have to rebuild my 700R4 tranny V-6 version. I have access to the special tools.
Pics, Helms book, etc.
I can get a
Transgo rebuild kit and any extra pieces I need (I will wait, until I remove the guts, to say what)
TransStar rebuild kit
or
B & M rebuild kit
?

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

TransGo and TranStar (they use TransTec kits, which are the best quality O/H kits).

 

Wow, no flaming intended here, but there are a couple of guys on here that must have something pretty big to back up their claims of all those tranny manufacturers being half assed. The one that really blew me away was the one against Art Carr. Wow, anyone that can put a 2004-R behind a low 10 second(probably 9 by now) Grand National and keep it in one piece has my respect! Once again, I dont want hate mail for this, but those are pretty strong words against the majority of the big tranny builders.

 

I have a new post up, i would like the tranny guys to respond to this. Thanks.

 

The complaints I have seen were on the Turbo Buick site and there are a lot of unhappy customers there. As I stated, I have never dealt with them.

 

You only get way you paid for (or at least you hope you did)

1st hand experience. Is it their 'stage 1' trans behind 800hp or something? Some people would be upset having their 2004r blown up behind an overpriced entry level replacement they thought would be the best....

I don't know... All I have to say is F the big names. Want something done right and cheap friggin do it yourself and when it lays in a million pieces on the asphalt pick up every piece to find the cause of the incident, and start over, learning from what you did wrong.

 

I only wish I could have 800HP in front of the lousy trannys' I've had, to explain why they were junk.
LA is FULL of the lousiest tranny shops!!! for the money.
I will be learning!
I eventually find out I'm always a better mechanic, just not the fastest, those make the money!

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA