Torque converter info

[john dolan]

>WOW 3.9 thats up there! I will sure be interested to hear this
>works out.Have you run the numbers on this? How many RPM
>at 70 MPH?

I don't know what the RPMs are, but at 30 to 40 MPH he should have been able to
pull two toweds up that hill ? (with a 3.9, no?) We could still use a little
more help on digesting all this poopie, as Chuck might say... Kind of like what
Arch said about the inadvisability of saving the $ on a somewhat worn tranny even
if the torque converter is the current problem.

What should Larry, and others consider when repairing/replacing?

Regards

 

[john dolan]

>What should Larry, and others consider when repairing/replacing?

I think Patrick mentioned something that came from Dick Paterson, about
getting a heavy duty rebuilt torque converter and specifically not an Allison ?
correct?. With Larry's gearing is that more so?

 

[bartz paul]

Arch:

If you look at the ad, Danny Dunn's price includes the Caspro Power Drive,
which Caspro lists for $920.00 in their catalog.

Paul Bartz

From: Gcbr
Sent: 11/1/99 8:31 PM

In a message dated 11/01/1999 6:20:12 PM Central Standard Time,

> I think Patrick mentioned something that came from Dick Paterson,
about
> getting a heavy duty rebuilt torque converter and specifically not an

> Allison ?
> correct?. With Larry's gearing is that more so?
>
John

This is the scary part. There is still so much we dont know so we have
myths to help us understand the incomplete picture that we have. Now
here I go romping on toes.

Danny Dunn (1/3 page add in marketplace) will sell you a tranny for
$1550 with an Allison Torque converter.

Transmission Exchange will sell you one for $7?? for a standard one
or one specially built for the GMC for $875 with an Allison torque
converter and heavy duty clutches. They have a website
http://www.txchange.com/main.htm
I will admit to being partial to these folks since they supplied me with
a tranny and final drive for the LeSharo for less than half what
Winnebago
wanted.

Then there is this place http://www.racing-transmissions.com/
They told me they could do it too. I honestly dont remember the
price but it was less than a grand.

I am not going to tell anybody what to do. You do the research
and live with what you decide. Somehow we have to learn that
the GMC tranny is just another tranny. The important thing is
that it be put back right. Close attention to detail and a few good
parts. The problem is that NOBODY is having special parts made
just for them so that they can double the price. Thats why we keep
ending up at race shops they know heavy duty and special care.
This is not magic folks. Just good craftsmanship.

I almost forgot Jasper also said they built a heavy duty tranny for
our ladies. I dont know if the engine shut down will affect that or not.

Understand that you are going to get standard rebuild tactics if you
go with a reman place. Just like I found knurled valve guide on my
heads. You pay your money and you get what you pay for. I will
tell you this if my tranny goes down I will bring it home and my
dragracing buddy will rebuild it. I know it will be right and the price
fair.

 

[al chernoff]

I am not an expert. I am only an expert in paying for three transmissions. The
last time, I decided to go with the 3.42 final drive. A few experts convinced
me that the final drive was the place to put any extra to the wheels, not the
tranny. Why, I guess that they feel that any change to the transmission puts
stresses on the tranny, where the final drive is divorced from that. That is
not my expert opinion, but what I have done. I now only have a new
transmission, sans the 3.5 gears, and a 3.42 cinnibar final drive. Only have a
few thousand on this one, but I hope this is the last one.
al

> In a message dated 11/01/1999 7:52:21 PM Central Standard Time,

> > That decision will be the
> > one that hopefully results in this scenario. I get a transmission
> installed
> > that I can forget about. I exchange money for it. End of story. Keep the
> > cards and letters coming.
>
> Larry
>
> Just keep in mind that I made an error in the post. I did not realize that
> Danny's tranny included the Caspro 3.5 sprockets and shift kit. I am
> sorry about that. I will say that I like the shift kit very much. I will also
> say that I am not convinced about the 3.5 sprockets.
>
> I would like to hear from some of you that know a lot more about trannys
> than I do. Here is my myth. I want a bigger final drive so I can unload the
> tranny. With bigger gears the tranny will turn over faster. this means it
> will pump more fluid through the cooler. When we did one of the surveys
> it turned out the tranny problem was much bigger than the wheel bearings
> ever hoped to be. Gears will do it but I dont think sprockets will. Sprockets
> were a good fix when there was nothing else. Now we have gears coming
> out our ears. Gears should also take some of the load off the clutch packs.
> Shift kit and gears should do wonders for the clutches. Now all of you
> remember this is brought to you by someone who has already screwed
> up big time once tonight.
>
> Take Care
> Arch

 

[blank]

GMCnetters,

I'm still so far behind I can't find "up", but I wanted to jump in here
since my name was mentioned. The referenced conversation that I had with
Dick Paterson was over coffee and a bagel one morning at Marion. That was
over a year ago and, since my hands were full of breakfast, I wasn't taking
notes. Someone who's getting ready to buy a torque converter should give
Dick a call and get the current "straight poop" from him and report back.

Please don't rely on my recollection of a breakfast conversation over a year
ago to base a decision on - I wouldn't.

Later,
Patrick

>
> In a message dated 11/01/1999 6:20:12 PM Central Standard Time,

> > I think Patrick mentioned something that came from Dick
> > Paterson, about getting a heavy duty rebuilt torque converter
> > and specifically not an Allison ?
>
> This is the scary part. There is still so much we dont know so we have
> myths to help us understand the incomplete picture that we have.

 

[bartz paul]

Arch:

Caspros' literature says: "... constantly changes the engagement of the
drive chain links with the teeth of the driving and driven gears, thus
distributing wear. This increases transmission life and decreases noise.
In the original GM design, the same chain link always engages the same gear
tooth, which concentrates wear and causes chain looseness." ..."Heat is the
greatest cause of failures ..." "...adds an efficient internal mechanical
torque multiplication gain of 15%. Under normal driving conditions, it
constantly reduces the load on the torque converter by 15%, thus resulting
in lower operating temperatures, and longer transmission life."

You say you want to "unload the tranny". I guess Caspro says they are doing
the same thing??

Paul Bartz

From: Gcbr [mailto:Gcbr]
Sent: Monday, November 01, 1999 9:24 PM

I would like to hear from some of you that know a lot more about trannys
than I do. Here is my myth. I want a bigger final drive so I can unload the
tranny. With bigger gears the tranny will turn over faster. this means it
will pump more fluid through the cooler.
When we did one of the surveys it turned out the tranny problem was much
bigger than the wheel bearings ever hoped to be. Gears will do it but I dont
think sprockets will. Sprockets were a good fix when there was nothing else.
Now we have gears coming out our ears. Gears should also take some of the
load off the clutch packs. Shift kit and gears should do wonders for the
clutches.

 

[homebase1]

GMCers
When I was younger and for some reason seemed to have more
money, I had a small collection of 356 Porsches. Mr Stoddard was
in the parts supply business.
Please study the literature and scrutinize the product. Talk to
many users, not just one. If "everyone" is happy with a product,
then you probably will be as well.