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Thanks, I'm no trans expert but I have a lot of
info. from work. Your trans is a 4L60E. It's a great trans that was to be used
only in the Sierra. At least that's what it was designed for at
first. The pan is square and it should have 16 pan bolts holding
it in place. The torque rating is 350 lb/ft. The gear ratio is 1st- 3.05, 2nd-
1.62, 3rd- 1.0 and OD- .69.
Rich
----- Original Message -----
Sent: Tuesday, March 11, 2003 12:54
PM
Subject: [Chevelle-List] trans
identification - attn: Rich
Rich,
You have helped me identify my
"mystery" trans in the past (turbo 400 with the "CT" code). So,
when you talk about transmissions, I listen. Hopefully others will as
well. Now that I've "buttered" you up, could you help me identify the
trans in my truck. I have looked in the owners manual, and the original
sales brochures, to no avail. The truck is a 2002 GMC Sonoma Crew
Cab - the little truck w/4 full doors and 4WD. I was guessing 4L60E, but
not sure. Is there a way to use the pan to identify, like the earlier
turbo 350 vs. turbo 400's ? And, what would the torque rating be
?
Thanks,
Kent
'68 Malibu ZZ502/502 :)
ACES #5102
----- Original Message -----
Sent: Tuesday, March 11, 2003 11:46
AM
Subject: Re: [Chevelle-List] 200-4R
trans
Tom, I don't know where you got your
information. All the 700R4 is a 350? And all we did was put a valve body on
it to make it shift 4 times. Do you really think this? The 700R4 is a fresh
designed tranny. It's not even close. Even the case is different in length.
I guess if it was that simple we could buy a valve body and make a 4 speed
from a 350.? Believe what you want, listen to who you want. But here
are the facts. The 350 was a medium duty trans built from 1969 to 1989. It
was used in 6 cylinder and small V8's. It could handle 425 pounds of torque.
The 375B is a heavey duty 350. The 700R4 was put behind 455 engines among
others. Doesn't sound like a 350 to me. The 700 in 1992 became the 4L60.
Later the E was added to mean electronic shifting. For those who are
wondering...
The 4 is 4 speed, L is longitude, (rear wheel)
and 60 is a rating for strength. The higher the rating the stronger the
trans.
The 3L80 is a renamed 400. The 3L80HD is a
475.
The 4L80 is a 400 trans with OD, and the 4L80E
is electronic.
The 200-4R and the 700-R4 have overdrive
planetary gears and use a lock up converter. The 200R4 and the 700-4R are
very close in torque rate. The 200R4 has a deeper OD and deeper 1st, 2nd,
and 3rd gears. Anyone thinking of buying a 200R4, be sure it says METRIC on
the pan. If it doesn't, your getting a plain 200. Also, in case someone
wanted to know, a "T" in the trans designation means transaxel. (Front
wheel). After working 30 years at Hydra-matic (now it's called Power Train)
I have managed to save some data both in my head and in my library. I have
worked on or had dealings with almost every trans we made. And I take
exception that someone thinks all we did was change a valve body and call it
a 4 speed. Most of this info is from my records so I know it's
accurate.
Rich
----- Original Message -----
Sent: Monday, March 10, 2003 6:25
PM
Subject: Re: [Chevelle-List] 200-4R
trans
In a message dated 3/10/2003
6:48:54 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
I thought
the 700-R4 was based off the TH400 and not the TH350? There are
quite a few 9 and 10 second Buick GN/T-type, etc that run modified
200-4Rs and Art Carr has one for $1599 with a 12" converter that'll
handle 700hp. For heavier cars they do recommend the 700-R4 - http://www.artcarr.com/faq.html#faq8
Dale McIntosh
TC Gold #92/ACES #1709
67SS/67 Elky
Dale’s
Place – My 67 SS
and 67 El Camino
ChevelleStuff – Decoding info on 64-72
Chevelles
Team 67 – 1967 Chevelle/El Camino Specific
Midwest
Chevelles – Midwest
Chevelle Show Information
All a 700R4/4L60 is, is a TH350 with
Overdrive. They both use all the same parts except the valve
body. The thing about the 2004R is the fact that it cannot handle
massive amounts of torque, such as what a big block or a stroker will put
out. By the time you put all that $$ into a 2004R to make it able to
handle anything, you can have a nice 700R4 built and get a nice new
driveshaft made, and it still ends up being cheaper. I can have a
severe heavy duty 700R4 built for $900 including the converter by my
tranny guy. He has people run them with 10 second big blocks w/o any
problems. I say the only thing the 2004R is good for is being put
behind a stock built 305, that and a boat anchor
:-).
Tom
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