Re: JPOR: Manual tranny advice
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Re: JPOR: Manual tranny advice
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I'm kinda looking at this same thing myself.
A friend of mine has done the sm420 swap - you don't mention if you have =
a 4 banger or a 6 cyl or whatever. I know that with the 4 banger, you =
can use the bellhousing from an s10 pickup and have it machine for the =
CPS. If you have a 6 cyl or other engine, then you pretty much have to =
get the bellhousing from Advance Adapters - pricey!
Same goes for the sm465 - need a bellhousing from AA.
np435 - some say you can use the bellhousing from an earlier (76 cj7) 3 =
spd bell housing.
In any case, you will need an adapter between whatever tranny you use =
and your np231 - unless you use the xcase that came with the tranny (in =
the case of the 435), but that usually defeats the purpose of getting =
the tranny in the first place.
The T-18 might be more swap friendly - I don't know cause I've never =
looked into that route, only the sm420, sm465, and np435.
The main reason for doing these swaps is better crawling, of course, so =
when I look at it I keep trying to find a dual transfer case setup that =
will work (not be too long) so I can get into the 130:1 range without =
having to increase my axle gearing beyond 4.88. The only two I've found =
that look viable are Chris Waterman's setup and Wild Horses setup (same =
as Chris's, but you pay for it), both which use an np435 with a cutdown =
mainshaft going into a 203 reduction box then into a bronco D20. I've =
found the 435, and am in the process now of trying to find a bronco d20.
Anyway, that's what I've found out about tranny swaps so far. Bottom =
line is that pretty much all of them will require at least a bell =
housing and more likely a bell housing and xcase adapter, all of which =
get expensive. I have heard that the np435 can be bolted to a 4.0 vy =
using the bellhousing from an earlier (CJ7) 3 spd tranny, but haven't =
found anyone with direct experience doing this yet.
BTW: I'm in the middle of the grand wagoneer swap. Got the axles ready =
to go to get the lockers and gears in, starting to get brake parts =
prices. Everything was OK until I found out that I need 1 backing plate =
and 2 rotors, which all run about $100 each - $300! ..... so I'm looking =
at disk brakes in the back - if I have to pay that much for drum parts, =
I may be able to upgrade to disks for the same price.
Regards,
Chad
-----Original Message-----
From: Mark Bolton <bolton@cwnet.com>
To: jeepoffroad@4x4wire.com <jeepoffroad@4x4wire.com>
Date: Thursday, March 02, 2000 1:02 AM
Subject: JPOR: Manual tranny advice
=20
=20
I'm looking for Grand Wagoneer axles for my YJ as some of you =
suggested. And I've now decided to upgrade from my stock manual tranny =
at the same time. I've heard mention of the T-18 and SM420 and would =
like to know pros and cons of each. What modifications are required, =
adapters to my 4.0 and stock t-case, are they longer, and do they shift =
any better than a NP435 which I have experience with.
=20
Appreciate any help.
=20
Mark Bolton
Mountain Ranch, CA
'91 YJ
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<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#000000 size=3D2>I'm kinda looking at this same thing =
myself.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>A friend of mine has done the sm420 swap - you don't =
mention=20
if you have a 4 banger or a 6 cyl or whatever. I know that with the 4 =
banger,=20
you can use the bellhousing from an s10 pickup and have it machine for =
the CPS.=20
If you have a 6 cyl or other engine, then you pretty much have to get =
the=20
bellhousing from Advance Adapters - pricey!</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Same goes for the sm465 - need a bellhousing from=20
AA.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>np435 - some say you can use the bellhousing from an =
earlier=20
(76 cj7) 3 spd bell housing.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>In any case, you will need an adapter between =
whatever tranny=20
you use and your np231 - unless you use the xcase that came with the =
tranny (in=20
the case of the 435), but that usually defeats the purpose of getting =
the tranny=20
in the first place.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The T-18 might be more swap friendly - I don't know =
cause I've=20
never looked into that route, only the sm420, sm465, and =
np435.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The main reason for doing these swaps is better =
crawling, of=20
course, so when I look at it I keep trying to find a dual transfer case =
setup=20
that will work (not be too long) so I can get into the 130:1 range =
without=20
having to increase my axle gearing beyond 4.88. The only two I've found =
that=20
look viable are Chris Waterman's setup and Wild Horses setup (same as =
Chris's,=20
but you pay for it), both which use an np435 with a cutdown mainshaft =
going into=20
a 203 reduction box then into a bronco D20. I've found the 435, and am =
in the=20
process now of trying to find a bronco d20.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Anyway, that's what I've found out about tranny =
swaps so far.=20
Bottom line is that pretty much all of them will require at least a bell =
housing=20
and more likely a bell housing and xcase adapter, all of which get =
expensive. I=20
have heard that the np435 can be bolted to a 4.0 vy using the =
bellhousing from=20
an earlier (CJ7) 3 spd tranny, but haven't found anyone with direct =
experience=20
doing this yet.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>BTW: I'm in the middle of the grand wagoneer swap. =
Got the=20
axles ready to go to get the lockers and gears in, starting to get brake =
parts=20
prices. Everything was OK until I found out that I need 1 backing plate =
and 2=20
rotors, which all run about $100 each - $300! ..... so I'm looking at =
disk=20
brakes in the back - if I have to pay that much for drum parts, I may be =
able to=20
upgrade to disks for the same price.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Regards,</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Chad</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: =
5px">
<DIV><FONT face=3DArial size=3D2><B>-----Original =
Message-----</B><BR><B>From:=20
</B>Mark Bolton <<A=20
href=3D"mailto:bolton@cwnet.com">bolton@cwnet.com</A>><BR><B>To: =
</B><A=20
=
href=3D"mailto:jeepoffroad@4x4wire.com">jeepoffroad@4x4wire.com</A> =
<<A=20
=
href=3D"mailto:jeepoffroad@4x4wire.com">jeepoffroad@4x4wire.com</A>>=
<BR><B>Date:=20
</B>Thursday, March 02, 2000 1:02 AM<BR><B>Subject: </B>JPOR: Manual =
tranny=20
advice<BR><BR></DIV></FONT>
<DIV><FONT size=3D2>I'm looking for Grand Wagoneer axles for my YJ =
as some of=20
you suggested. And I've now decided to upgrade from my stock =
manual=20
tranny at the same time. I've heard mention of the T-18 and =
SM420 and=20
would like to know pros and cons of each. What modifications =
are=20
required, adapters to my 4.0 and stock t-case, are they longer, and =
do they=20
shift any better than a NP435 which I have experience =
with.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>Appreciate any help.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>Mark Bolton</FONT></DIV>
<DIV><FONT size=3D2>Mountain Ranch, CA</FONT></DIV>
<DIV><FONT size=3D2>'91 YJ</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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