Help me talk myself out of or into a NV4500

[Chevy305]

I was waiting for you to chime in, I expected a more sarcastic answer.. Since you called me out for going auto awhile back

The biggest factor will be how easily I can find a trans.. I found one today, 250$ but it had been sold.

In those pictures, it looks like you're running a mechanical linkage? Does the SM465 bell swap onto a NV4500?

Are there any real differences between chevrolet and dodge NV4500s that I should be aware of?

Haha I'm just happy that you realized that going auto was a mistake.

The SM465 bellhousing will not work with the NV4500 as the mounting pattern is different. You can go with a factory 4500 bellhousing and use the factory 4500 hydraulics but this puts the slave on the passenger side and can interfere with exhaust and or the front driveshaft if you don't have a lift or have a clocked t case.
The other option is what I went with, an Advance Adapters bellhousing. It allows for use of factory mechanical linkage or for a driver side slave as the later 465s came with.

The only differences between the dodge 4500 and tge GM 4500 is the spline counts on the input and output. You could run one but you'd have to run a special clutch and a dodge tcase or change the output shaft. I'd avoid those headaches and run a GM NV4500.

As far as the shifter is concerned, the 95 and up have a bolt on shifter and can be converted to a short throw. This is the one I have:

http://pages.ebay.com/motors/link/?nav=item.view&id=271394784519

 

[82355]

You can use an SM465 bell housing, but it takes some work. There is a link to another forum where a guy did it in a different NV4500 thread.

Martin

 

[82355]

Here is the link to another forum where it was done.

http://67-72chevytrucks.com/vboard/showthread.php?t=611566

Here is the thread that came from.

http://coloradok5.com/forums/showthread.php?t=253679

Martin

 

[crawlink5]

I have the sm465 BH Hydraulic on driver side with a NV4500.

You need to trim the input housing down, make the BH hole bigger to slip fit the input housing, and drill and tap the bolt holes. The housing and the BH hole must be done in a machine shop to get centered correctly.

This is behind a Cummins 4bt. Have had no problems with 5th gear nut. Not saying I won't, just not yet. 8 years

 

[COCHEV]

so if i understand it correctly, all you do is mock up the 465 bell on the 4500, mark new holes, drill and bolt up. That's it?

Sounds a lot simpler than all the other swaps I've read about. Then you can just bolt up a 208 or 241 if you don't wan to mess around with the 205 or doubler deal...

 

[82355]

That's what I thought.

 

[Larry]

Sounds a lot simpler than all the other swaps I've read about. Then you can just bolt up a 208 or 241 if you don't wan to mess around with the 205 or doubler deal...

Exactly! On my ’89 V2500 Suburban with a factory 456/241 the NV4500 swap was a piece of cake by just reusing the original 32 spline 241 what was on the original 465. The 241 bolted right on with no with no muss no fuss… The 205 behind the NV4500 in my ’78 K10 has been an expensive proposition. 205’s are great but often overrated for what most people really do. I’ve seen 208’s and 241’s take some serious beatings in friends rigs but you can only smack them on a rock once When shield properly they do well.

 

[COCHEV]

so is the bellhousing deal really that simple? Drill new holes and bolt up. Same hydraulics, same flywheel, pressure plate, TO, etc???

Pilot bearing same?

 

[82355]

I have an NV4500 out in my hogbarn. If it warms up, I can go out there and try.

Martin

 

[chulisohombre]

Still seems fairly easy compared to some I've heard. Subscribed as someday I may do This. My 465 is pretty sloppy after 42 years. Martin has the 4500 right next to his pile of big blocks. Lol

 

[82355]

It actually is....

Martin

 

[broncoman6524]

I'll take it off your hands.. trade ya a 2 wheel drive SM465

 

[chulisohombre]

I figured as much. Haha

 

[82355]

I'll take it off your hands.. trade ya a 2 wheel drive SM465

It has third gear out.

Martin

 

[dyeager535]

You need to trim the input housing down, make the BH hole bigger to slip fit the input housing, and drill and tap the bolt holes. The housing and the BH hole must be done in a machine shop to get centered correctly.

Where did he say that? "I very simply took the factory sm465 bellhousing (the 85'-up hydraulic one ) fit it on the input bearing retainer of the nv4500(same size)..."

http://67-72chevytrucks.com/vboard/showthread.php?t=611566

Doesn't look like any portion of the bellhousing input bearing retainer lip is machined here: http://67-72chevytrucks.com/vboard/attachment.php?attachmentid=1198504&stc=1&d=1389451095
and I see no difference in the "after" either http://67-72chevytrucks.com/vboard/attachment.php?attachmentid=1198506&stc=1&d=1389451727

IIRC, the input shaft/retainer of the 4500's changed a few times, perhaps this is where confusion is coming from? Machining the 465 bellhousing would certainly not make the swap as easy as I read his method.

Edit: and here is the "data": "The SM465...The front bearing retainer flange measures an unusually large 5-1/8" in diameter" https://www.novak-adapt.com/knowledge/sm465.htm
[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Bearing Retainer specification


Bellhousing T/O bearing
Index Dia. Snout Dia. GM NV4500 1993-95 5.125"[/FONT]
http://www.high-impact.net/nv4500.htm

So in other words, the hydraulic 465 bellhousing will only work with the '93-95 GM 4500's.

 

[82355]

I have an NV4500 out in my hogbarn. If it warms up, I can go out there and try.

Martin

It is pretty hot today.

This is an NV4500 with an external slave.



Took the bellhousing off.



Hydraulic SM465 slid right over the input. Nice tight fit, no grinding required.



You can see it is flush across the top.



Bolt holes aren't even close to lining up.



Disregard the gap at the bottom.



If this plug was removed, the bellhousing would sit flush against the face of the transmission.



Martin

 

[dyeager535]

All but the passenger bottom bolt look like they have enough meat to drill.

That bolt might be a bit close to drill and tap without hitting the existing hole.

 

[GWeakland620]

Driver's bottom looks close too.

 

[82355]

Blurry picture.

Martin

 

[dyeager535]

His photos appear to indicate that bolt hole is elongated from the original, but I can't be certain.

Top pic is drivers side, no?