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post #11 of (permalink) Old 01-15-2004, 09:37 PM
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Re: How do you ID an SM465?

The SM465 is a great tranny, but unfortunately not bulletproof. I have one in my Scrambler and one in my tow rig. I don't notice they're that bad for city driving, but our "cities" are anyplace with a McDonalds and over 10,000 people.

This is a pic of the input shaft of a SM465 that was behind a 305. The guy did used to wail on it, but I'd never seen one twist before so I grabbed a pic.

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post #12 of (permalink) Old 01-15-2004, 10:29 PM
 
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Re: How do you ID an SM465?

A weak point of the SM465 is the 10 spline output shaft that came on some of these trans'. The 465's that came with a np208 use a coupling sleeve and long adapter to mate the two shafts, this coupler commonly wears the output shaft splines on the trans. I''ve seen many of these 10 spline outputs with the splines completely striped off. The sm465 that were mated to 205's seem to be have better spline engagement.

It's a Pickup trans,,,,,,,,,,,if you don't have a problem driving a pickup in the city,,,,,you won't have a problem driving a Jeep with a pickup trans. I drove mine for years on the street and never even thought about it.
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post #13 of (permalink) Old 01-16-2004, 10:32 PM
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Re: How do you ID an SM465?

</font><blockquote><font class="small">In reply to:</font><hr />
A weak point of the SM465 is the 10 spline output shaft that came on some of these trans'. The 465's that came with a np208 use a coupling sleeve and long adapter to mate the two shafts, this coupler commonly wears the output shaft splines on the trans. I''ve seen many of these 10 spline outputs with the splines completely striped off. The sm465 that were mated to 205's seem to be have better spline engagement.

[/ QUOTE ]

The SM465/NP205 typically also had this arrangement, and I have seen the couplers worn splineless. Luckily it's the coupler that goes, but at 180 pounds for the transfer, it's still not easy to change.

There were 3 spline arrangements for the SM465, the 10 spline output, which is the most common, the 2WD 35 spline, and the 32 spline on the '80 and newer HD trucks with the NP205, but the NP205 used a female rear slip yoke like the NP208. I have several of each sitting in my barn.
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post #14 of (permalink) Old 01-17-2004, 12:57 AM
 
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Re: How do you ID an SM465?

Worn SM465 output caused from the coupler sleeve,,,,,,,,,,,,,,,,,



The 10 spline output is only 2 5/8" long which is another reason it is commonly used in swaps, the adapter is only 3.1". The 35 spline uses a 6" adapter, and no one uses the 32 spline output because it's just too long. You can swap out the long 32 spline shaft for a short one.
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post #15 of (permalink) Old 01-17-2004, 01:29 AM
 
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Re: How do you ID an SM465?

Here is one of my 10 spline, sm465's mated to a "short output" D300(w/4 to 1) using a 3.1" long Novak Adapter. A nice, short package with a 144 to 1 crawl ratio when used with 5.13 R&amp;P's. [img]images/graemlins/grin.gif[/img]

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post #16 of (permalink) Old 01-17-2004, 04:35 AM
 
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Re: How do you ID an SM465?

That's pretty nice. Red paint has anice touch too [img]images/graemlins/laugh.gif[/img]

For now.. I'm going to have a machine shop match the output of the SM465 to the input of the D300..
But.. get them to spline the entire length of the output shaft.

Then I'm going to shorten the really LONG adapter (12" long or something stupid.) and then.. cut the output shaft to the correct length.

AND.. it won't cost me a $500+ adapter.
The adapter I'm using is a standard one found on SM465s.

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post #17 of (permalink) Old 01-17-2004, 10:35 AM
 
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Re: How do you ID an SM465?

</font><blockquote><font class="small">In reply to:</font><hr />
I'm going to shorten the really LONG adapter (12" long or something stupid.) and then.. cut the output shaft to the correct length.

[/ QUOTE ]
It won't work,,,,,,,,,,the shaft dia on the 32 spline "long shafts" necks down to a smaller dia between the splines and the output bearing. After you cut and respline it, here is not enough shaft dia to engage the T case input.


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post #18 of (permalink) Old 01-17-2004, 12:33 PM
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Re: How do you ID an SM465?

The NV4500 - is it a 5 speed - with granny &amp; overdrive?

Seems like that would be the ideal combo if it is.

3 speeds around town, OD for highway, Granny for grunt.

Or does something like that exist?
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post #19 of (permalink) Old 01-17-2004, 02:43 PM
 
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Re: How do you ID an SM465?

I was afraid of that.. I measured with a stick/fingers... gonna get out the MircoMeter now..
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post #20 of (permalink) Old 01-17-2004, 06:23 PM
 
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Re: How do you ID an SM465?

The NV4500 is a a very cool tranny. All 6 gears are synchronized (5 forward plus reverse). Came in GM's and Dodges with the 1993 and 1994 Chevy versions having the lowest first gear of 6.34:1 but the reverse in those were unsynchronized, '95 and newer have a 5.61 frist gear.
They are almost 20" long so this might be a problem for some Jeeps.
They have PTO Ports both Sides if you can use them for something,,,,,,
Gearing:
1993 &amp; 1994---------------6.34--- 3.44---1.71---1---.73--- R 6.34
1995 and newer----------5.61---3.04---1.67---1---.73--- R 5.61

But I think I have a even better trans in my Duramax GMC,,,,,,,,it has a ZFS6-650, manual 6speed,,,,,,,with compound low and overdrive. It's like driving a 4speed in town, with overdrive on the highway and a granny gear for off-road &amp; towing.
ZF S6-650 Gearing--------- 5.79--- 3.31--- 2.10 ---1.31--- 1.00 ---0.76

[img]images/graemlins/beach.gif[/img]
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