| Here are pics of the SM420 adapter plate kits parts I have for sale. If you have any questions or are interested in
purchasing either item you can reach me
here. I have received several e-mails with questions on the
installation and the parts needed to do this swap. I will condensing them into a
FAQ of sort sometime in the future. If you have come across this page and
have info you would like to add, please e-mail it to me and I will give you
credit if used. |
|
First the disclaimers:
This is NOT an Extreme Bends clone. Don't call
them bitchin*. Kits are NO
longer available. A limited run of the adapter plates were produced mid
March and will be sold as Adapters only. Same quality and identical to the
earlier versions. The price has gone up unfortunately to $125
Indexing rings are also available for $25 |
 | I am not affiliated with anyone else making, selling or installing
plate style adapters, at least that I know of. |
 | I am not in the business of making and selling parts (I have a real
job), but in an effort to get what I want at an affordable price I have
developed a source for these high quality products. As a result I can
make them available at a reasonable cost to fellow enthusiasts. |
 | There is a great set of install procedures and a parts list for this
type of plate adapter on Extreme Bends web site. I didn't write it or
contribute in any way, but found it to the best write up for this swap. |
 | Charlie Glabe, aka Pinhead has also documented some important info
when he did his conversion. He also has a tcase linkage kit I believe he
is selling at a reasonable cost.
Here's a link. |
|

These are some of the items included in the kit.
Missing are the Toyota parts and the gasket set which appear in pictures
below. |
 |

Above is the Sm420 Gasket Set from NAPA,
PN# TS27520X. The gasket on the left is the one that goes between the
tranny and the adapter plate. The rest are a bonus, to seal up your tranny
before install.
To the left are the items that come from
Toyota. I have elected to use OEM parts in this kit and from top to bottom
they are: The washer/spacer that goes on the output shaft of the tranny
between the 2 bearings. It shims the input gear to the correct position.
Next is the rear tcase oils seal, and then a tcase gasket. |

The indexing rings are needed to align the tranny
to the 3spd bellhousing when adapting to an F or 2F engine. The 3spd
Toyota tranny's input bearing retainer was used to align the stock setup,
and the SM420 is smaller. These are not needed if you have converted to GM
power. The rings are machined for a tight fit and using some boiling water
you can expand them and slip into place. Optionally you can tig weld them
to the retainer.
|
The plate adapters are CNC milled from 6061
aluminum by a professional machinist to exacting tolerances using state of
the art equipment. All holes are relieved after boring, the transmission
mounting holes are recessed and a socket will fit over the 3/8" bolts
allowing you to secure the plate. The transfer case mounting holes are
tapped for 7/16" coarse bolts. When using 3spd output flanges and
driveshaft yokes "NO" grinding on tranny is required if you turn the
flanges/yokes down to 3.80" outside diameter. This will leave plenty of
surface for the bolts and clear the tranny.
 |
If you are running an different engine than the stock F or 2F, expect to make
mods if you use a rear crossmember to support the tcase and back of the motor.
This plate rotates the tcase some and as a result the Advance Adapter type of
crossmember must be modified to work. No mods of this type are need with stock
setup.
Also plan to have your driveshafts modified. The difference in overall length
of your current tranny plus the .75" of the adapter will give you an idea of the
difference in lengths. After the install measure for yourself and make your own
decision. Shackle reversals require more travel so the compression doesn't break
your tcase, and the droop split your front slip joint.
These are no longer available, but I
left the info here as a reference.
The Adapter Plates sell for $125 each, the Indexing Rings $25 each. The
Toyota parts kit including the seal, tcase gasket and washer/spacer is $20. The N307LOE bearings
are $44. The Grade 5 mounting hardware is $8. The SM420 gasket kits $10. Totally
$207 for all of the items. Shipping
from 46220 is not included. PayPal or Money Orders are accepted forms of payment.
Immediate shipping upon receipt of payment.
Did I mention
that this is not an Extreme Bends clone, and not to call them bitchin*.
Here are some important part numbers:
 | Toyota Washer used between the bearings 90201-35070 |
 | BCA/Federal Mogul Bearing N307LOE (available from
A & W Bearing in Texas)
|
 | NAPA SM420 gasket set TS27520X |
 | Toyota transfer case case gasket 36143-60010 or
SOR's # 056-22 |
 | Toyota transfer case seal 90311-42014 |
 | Pilot Bearing for Warden's pilot adapter GM's #14061685 |
|
* Many have asked what this statement is about. Well in a
nutshell there was some discussion on the Pirates BBS and it was suggested that
people who had bought plates elsewhere were calling them complaining about the
grinding on the tranny. I decided to make sure it was understood this
plate wasn't a clone, and that if you have concerns, don't call them.
Copyright © 2002 by Michael Smythe. All rights reserved.
Use this information at your own risk, I am not responsible for modifications
YOU make, to your Cruiser, as a result of information you get from these pages.
Revised:
25 May 2003 15:37:21 -0500 .
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