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<DIV>In a message dated 12/31/2013 6:05:49 P.M. Eastern Standard Time,
jadney@vwtype3.org writes:</DIV>
<DIV>
<BLOCKQUOTE style="PADDING-LEFT: 10px; MARGIN-LEFT: 10px">
<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>On 31 Dec 2013 at 16:28, Bobsnotch@aol.com wrote:<BR><BR>> Well,
checking some of the info I got from Russ, says that there were 2
<BR>> different sets of AT final drive gear ratios. A 411 (sedan) got the
same <BR>> 3.67:1 that the type 3 got. The 461 (wagon) got the 3.91:1
final drive ratio. <BR>> The 411 is marked ED, while the 461 is
marked EC (how you tell the difference <BR>> between the 2).
<BR><BR>Okay, here's what I find in my latest "Without Guesswork."<BR><BR>Type
3: 9:33 (3.67) transmission marked EB<BR><BR>Type 4 (both bodies): 11:43
(3.91) up thru July '73 marked EG or EH<BR><BR>Type 4 1700 sedan: 11:41 (3.72)
from Aug '73<BR><BR>Type 4 1700 wagon: 11:43 (3.91) from Aug '73<BR><BR>Type 4
1800 both bodies: 11:43 (3.91) from Nov '73<BR><BR>or, viewed a different
way:<BR><BR>EB: 9:33 (3.67) used on Type 3s<BR><BR>My book doesn't mention the
ED, but I'll bet that's the later Type 3 <BR>version introduced in Aug
'71.<BR><BR>EG: 11:43 (3.91) used on Type 4 1700s up to July '71<BR><BR>EH:
11:43 (3.91) used on Type 4 1700s Jul '71-on<BR><BR>EK: 11:41 (3.72) used on
Type 4 1700 sedans from Jan '73<BR><BR>EM: 11:43 (3.91) used on Type 4
1800s<BR><BR>I believe the E? is a prefix to a serial number that's stamped
<BR>somewhere on the lower side of the case, so it will somewhat hard to
<BR>find. I don't remember where to tell you to look for it.<BR><BR>The book
implies that all of these gearsets were made by Gleason.<BR><BR>I agree that
changing the output drive flanges is probably the way to <BR>go. That should
be a direct swap, but don't forget to install the <BR>seal covers over the top
of the Allen bolts that hold those flanges <BR>in place. If those are not
sealed, gear oil will come out there and <BR>wash the grease out of the CV
joints, making a mess and leaving the <BR>final drive low on gear
oil.<BR><BR>Swapping gearsets is a much bigger deal. It sounds interesting,
but <BR>may require special tools and a lot of care to get a quiet and long
<BR>running adjustment. Still, you should study the process carefully and
<BR>consider it.<BR><BR>Happy New Year, Everyone!!!</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Happy New Year to everyone!!</DIV>
<DIV> </DIV>
<DIV>Jim, I got the info off the disc Russ made for me. You should have a copy
of it from Marilyn, that she gave you at the 2012 Invasion (it's in PDF
form).</DIV>
<DIV>In the Automatic Transmission section, is where I found the info (section
H 4.2 AT page 1-14), supplement 10. It's a nice chart. : )</DIV>
<DIV>In it, it calls out the trans number is stamped right on the flat ledge
above the fill plug for the diff (page 1-13). </DIV>
<DIV>Also called out are engine codes for the t-3 trans under the "U"
designation, and the EB prefix for the 003 300 035 A, and EJ prefix with
an H suffix, but they also call out an "E" suffix for California only,
from Aug 71 on (with "X" as the engine designation, and an EJ prefix). Note,
this is also the same year that VW changed the vacuum modulator unit. But what
surprised me, was the govenor unit had the same part number for all but the
bus trans (part number 003 325 041).</DIV>
<DIV>The T-4 also got it's own "California only" trans with the designation of
003 300 035 F (EG was standard, but EH was Cal only) from 71 on. </DIV>
<DIV> </DIV>
<DIV>All of that said, I believe the early ED t-4 transmissions were used in
Europe with carb engines from 68 to 70, and when VW started offering the Fuel
Injection on them, along with importing the Type 4 (411/412) to the USA, they
changed the final drive gearing to 3.91:1 (8-70). It used engine code
"W".</DIV>
<DIV> </DIV>
<DIV>The EB type 3 trans was up thru 8-71 (003 300 035 A), then was replaced
with the EJ trans in 8-71 (003 300 035 H). </DIV>
<DIV> </DIV>
<DIV>I hope this helps, and maybe fills in a couple of gaps.
<DIV> </DIV>
<DIV><FONT lang=0 size=2 face=Arial FAMILY="SANSSERIF" PTSIZE="10">Bob 65
Notch S w/Sunroof and IRS aka Krusty<BR>64 T-34 Ghia aka Wolfie<BR>71
Square-vert under
construction</FONT></DIV></DIV></BLOCKQUOTE></DIV></FONT></BODY></HTML>