RE: Model 20 axles....posi /non- posi ATTN: JOE

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

I have included the entire thread of this message for reference.
Pleas scroll to the bottom. BTW this is some great information
from Tony Z. Thanks much Tony........

>
> Message-ID: <002b01c4b149$18186f40$09e0f343@compaqcomputer>
> From: "Tony Zamisch" <tony.zamisch@xxxxxxx>
> To: "AMC List" <mail@xxxxxxxxxxxx>
> Subject: RE: Model 20 axles....posi /non- posi
> Date: Wed, 13 Oct 2004 10:21:28 -0700
>
> > From: "Todd Jesme" <jesme@xxxxxxxxxxx>
> > To: mail@xxxxxxxxxxxx
> > Subject: RE: Model 20 axles....posi /non- posi
> > Date: Tue, 12 Oct 2004 20:35:16 -0500
> > Message-ID: <NKEJKAHLGJLPICPKNNKMMEFNCGAA.jesme@xxxxxxxxxxx>
> >
> > Joe,
> > Perhaps the person who told you that meant that the 1970 and up AMC 20
> > reared had differnt length "axles" that 69 and earlier.  If memory
serves
> > (and it usually doesn't!), the driver's side axle is 1" longer than the
> > passenger side axle on the 70 and later rearends.  There has been no
> > difference in axle lengths in any AMC rearend that I have swapped to
posi
> > from non-posi.  I think that either you or he had a miscommunication.?.
> > Trust me when I tell you that you can put that posi unit and gears into
> your
> > Grmmie with NO PROBLEMS, provided it is an AMC 20 in it now.  The AMC 20
> is
> > a great rearend, and absolutely bulletproof with 1-peice axles.
> >
> > The "other" voice of experience
> > Todd
> >
> > -----Original Message-----
> > From: Joe [mailto:jgray_55@xxxxxxxxx]
> > Sent: Tuesday, October 12, 2004 3:44 AM
> > To: AMClist; BadAssGremlins
> > Subject: Model 20 axles....posi /non- posi
> >
> > Ok,This doesn't make sense, so i  have to ask....On a
> > model 20 rearend...WHY the heck are the axles
> > different length, from posi and non posi ?  I was just
> > told by a MUCH MORE knowledgible AMCer than me, that
> > this was true. What the HE$%^^%$?? Guess i'm just used
> > to messing with old 9" ford rear ends for years.They
> > are sturdy and simple!! I had just bought a nice used
> > twin grip unit and 3:54 gears to put in a 69 Javelin
> > axle assy that  "WAS" going to go into my 72 Gremlin.
> > I've had the axle assy for awhile.Any one want to buy
> > it??...3:54 gears also. I'll probably look for a 9" or
> > Mopar 8 3/4. Thanks to anyone who can make sense of
> > this, Joe
> --------------------------------------------------------------------------
-
>
> Lister, Friends, and anyone else who cares,
>
>    It appears that some of you are under the impression that I talked with
> Joe Gray and gave him bunk info regarding AMC axle lengths. I have not
> talked with Joe, nor anyone else on this List about that subject since I
> posted the info below back in February of 1999.
>
>    With the thought that this info may help Joe or someone else on this
> List, I am posting it again. As you can see, there is NO difference in
axle
> lengths from "posi" (twin-grip) to "non-posi" (open carrier).
>
> Apparently, Joe was talking with someone who was misinformed.
>
> Kind regards to all,
>
> Tony Z.
> California Classic AMC, Inc.
> Aerolite Mfg. Co.
> (619) 423-0364
> 10:00 to 10:00 PM Pacific Standard Time
> Monday Through Saturday
> closed Sundays and Holidays
> Home of the AMC Land Speed Record and
> "Great White", The World's Fastest AMC Car.
> www.amx-perience.com
>
> --------------------------------------------------------------------------
--
> ----- Original Message -----
> From: "Tony Zamisch" <tony.zamisch@xxxxxxx>
> To: "amc list" <amc-list@xxxxxxxxxxxxxxxxxxxxxx>
> Sent: Tuesday, February 09, 1999 3:17 PM
> Subject: AMX, Jav Axle specs
> >
> >
> These are the CORRECT factory measurements for the axle shaft with the
> hub pressed on and torqued to factory specs. Also, some info on solid
axles.
>
> 68/69 AMX and Javelin. Open carrier or Twin Grip.    Right rear (passenger
> side)
> Outer, or flat edge of hub to splined end of axle shaft: 29-1/4 inches.
> Overall measurement end to end:  31-15/16 inches.
>
> 70 AMX and Javelin. Open carrier or Twin Grip.    Right rear (passenger
> side)
> Outer, or flat edge of hub to splined end of axle shaft:  28-3/4 inches.
> Overall measurement end to end:  31-7/16 inches.
>
> 68, 69, 70 AMX and Javelin. Open carrier or Twin Grip.   Left rear (driver
> side)
> Outer, or flat edge of hub to splined end of axle shaft:   27-1/2 inches.
> Overall measurement end to end:   30-3/16 inches.
>
> The spline length is the same on all the above axle shafts and is: 1-11/16
> inches.
> If you are looking to replace a stock axle shaft with another stock shaft,
> then the above measurements apply.
>
> As you can see, the 70 right axle shaft measurements are 1/2 an  inch
> SHORTER than the 68/69 right axle.
>
> Also, There is an easy way to tell what rear end you have in your AMX or
> Javelin, and all you need is a tape measure. Here's how:
> This measurement MUST be taken on the RIGHT (passenger) side.
> Put one end of the measuring tape on the back side of the AXLE FLANGE. NOT
> the brake backing plate. Run the other end over to where the axle tube
meets
> the pumpkin. If your measurement is 18 inches, you have A 1970 AMX or
> Javelin rear end. If your measurement is 18-1/2 inches, you have a 68/69
AMX
> or Javelin rear end. Simple as that. Good info to know when buying a whole
> rear end from someone. If you are not too concerned about dead-on stock,
> keep in mind that 68/69 rear ends are easier to get, because more of them
> were made. Thinking in terms of stock replacement parts, such as axle
> shafts, make your choice wisely. Trying to find a stock 70 right rear axle
> at times is difficult. I know.
>
> Measuring axle shafts for replacement with solid axles
>
> To get a correct measurement on any (out of the car) axle shaft WITH the
> brake backing plate still attached, remove the wheel cylinder and stand
the
> axle up. Axle nut up, splined end down. Getting someone to help you makes
> this job easier. Put a straight edge on the flat (outer) side of the hub.
> Take your tape measure and slide it through the hole where the wheel
> cylinder was, and go STRAIGHT down to the ground. Getting a parallel
> measurement is far more accurate than a diagonal measurement, when it
comes
> to having solid axles made. Remember,  you DO NOT use OVERALL measurements
> for solid axles! Only use the "hub to spline" measurement as explained
here.
>
> If you would like more info on this, or any other related AMC subject,
give
> me a call.
>
> "The Voice of AMC Axle Experience"
> Tony Z.
> California Classic AMC, Inc.
> (619) 423-0364


JOE,

If you still are unhappy about the model 20 and the twin grip and really
don't want that model 20 with twin grip, I have a Ford
9 inch from a full size ford. This axle would need to be shortened and have
leaf spring perches welded on in place of the control arm brackets and
stuff.  The axle does NOT have the 5 on 4-1/2 inch lug pattern. The neat
part is this 9 inch has factory disc brakes!  If you are interested let me
know.
Armand
P.S. Are you having any luck finding a 70 or 71 304 flywheel in your
collection? I still need one. Thanks