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Author Topic: Checking in, found an oddball.  (Read 3216 times)

AZTimT

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Checking in, found an oddball.
« on: August 19, 2015, 09:47:43 PM »

Hi everyone, I haven't been on here much for a long time, I hope all is well with fellow HD fans. I am very happy to see the site is still going strong, lots of positive improvements. I still have two of my three hd's. I often run around hauling hay, backhoe, projects, etc with my 94 monroe 4x4 conversion with the cummins I put in it and it has treated me very well for the past 5 years. The 95 2wd is still in limbo/backburner project status.

I love the HD platform, they are extremely well built rigs, but both of mine are single cabs. I have 4 people in the house now and I also don't enjoy sleeping across a bench seat, so I have been looking for what is out there with more cab space. I have seen many crewcab HD's that have a crazy long wheelbase for most of the places I need to go, but I have never seen an extended cab. I was under the impression they were never made, but I have found saying never usually results in being proven wrong. I found an ex-railroad HD near me that has an 3rd door extended cab on what looks to be the middle/~159" wheelbase, so I am going to go check it out to see if it is a legitimate factory/conversion job or aftermarket. I figure if any fleet had the pull to make special order requests to GM, the railroad would be in the top running. In reality, if it is done right it may become my new dumpbed project as I would like to get into making some money with my M59. I figure that the 8-9' bed length is about all the HD gvw can handle for the dirt/gravel/concrete work I find myself doing most often. Factoring for percentage of time being used as a dump, I would rather have the better fuel economy of an HD than always get low mileage with a bigger cdl category truck. I drive for a living and one less chance to mess with DOT is that much better. I had actually contemplated putting a 3 door cab on my 95, but sometimes less projects is more... time for other things.

If this comes together, my plan for the dumpbed rig is to put an aluminum bed with a gooseneck hitch under a trap door. Then repower it with an international DT360, basically a wet sleeve & slightly beefier option to the 5.9 cummins that came in some '88-'93 medium duty & bus offerings from IHC. Then mate the DT360 to a spicer 6+1 to keep it simple for now. Either that or a baby 13 speed if I go air ride on the rear which would be a good excuse to put in a beefier rear end... and a front drive axle too, but that would all be further down the road as I tend to have way too many things on my plate most of the time.
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

someotherguy

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Re: Checking in, found an oddball.
« Reply #1 on: August 20, 2015, 02:43:07 PM »

You're right that if anybody could special order it, it would probably be the railroad - however my (second-hand) knowledge of GM's attitude towards the HD's was lukewarm at best.  A local wrecker builder wanted to order a whole fleet's worth a certain way, nothing crazy, just minor tweaks - and GM told him to pound sand, that the sale didn't matter to them that much.

I'm of the opinion that any extended cab HD is home-made.  Someone can do a very convincing job, but if you decode the VIN it should tell the story.  Check here: http://www.someotherplace.com/info/GMT400VINCARD.JPG

Check the 4th digit.  If it's NOT a 'K', then the cab is a lighter duty cab they swapped over whole and left the original VIN tag intact.  This is good - you don't want to get into the hassle of a cab that has had a VIN tag swap, which is illegal.  I've known of people to cut out the metal around the tag and weld in another, which is pretty much undetectable with the dash put back in place.

If the 4th digit IS a 'K', then the VIN is a 3500HD VIN, so let's confirm cab style with 7th digit.  A '4' would indicate a 2 door regular cab.  A '9' would be an extended cab.

Something else useful would be to run the VIN through compnine to see what it was built as.  That will also give you the original wheelbase.

The 159.5" wheelbase regular cab is pretty much perfect for swapping an extended cab body onto, which is what quite a few have done.

Richard
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06 Silverado ISS / 06 Silverado SS / 06 300C SRT8

KODIAK

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Re: Checking in, found an oddball.
« Reply #2 on: August 20, 2015, 11:04:58 PM »

May be Monroe did A conversion ? Like they do the 4 doors  & 4x4  and the vin #  stays the same  My 4x4 HD vin shows it to be a 2WD  & my 4 door vin shows to be a 2 door cab they are both Monroe conversions HD
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AZTimT

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Re: Checking in, found an oddball.
« Reply #3 on: August 22, 2015, 08:59:41 PM »

Richard, thank you very much for your helpfully informative reply! I used to have most of that info memorized, but that was years ago and I forgot most of it. I will use the info to check it this evening when I go look at it. Arranging a meeting between the schedules of a trucker/rancher/father and a railroad man has been fun.

I know GM used to throw away a lot of $$ opportunities with the old too big too fail attitude back then. Kind of silly some of the stories I've heard, but they sure did well with the HD regardless.

Kodiak, I am hoping that I find a conversion company data sticker/plate somewhere in the cab like my Monroe 4x4 has behind the seat.

Tim
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

AZTimT

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Re: Checking in, found an oddball.
« Reply #4 on: August 23, 2015, 02:03:38 AM »

Well, I was able to look at it tonight and it's going to be coming home in a few weeks. It looked great, as in professionally done, but I could not find any conversion info to confirm it, at least not until I got back home to decode the rpo sticker in the glovebox. :D
2000 GMC / cold weather 6.5td ho (worn out) / 4L80-E / 4.63 D80 / 2 leaf front / standard rear leaf pack with 4 leaf overload pack / tilt / cruise / grey int / white ext / 212k mi and a huge reading utility bed all for $1500.
It started out as a 135.5" 2 door regular cab c3500hd when it left the Flint plant with RPO VSQ = (FLINT ASM TO MONROE TRUCK EQUIP, JANESVILLE, WI AND RETURN TO JANESVILLE ASM) in my documentation, which explains why the frame stretch for extended cab conversion looked so well done. The body is in great shape and the three door extended cab has just the right amount of room to recline the seat for a nap along with extra room to secure stuff I don't want outside.
The 30k dealer sticker was even in the glovebox too!
I'm happy about this one coming home! :D
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

someotherguy

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Re: Checking in, found an oddball.
« Reply #5 on: August 23, 2015, 09:14:01 AM »

Sweet!  Can't wait for pics!

Richard
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06 Silverado ISS / 06 Silverado SS / 06 300C SRT8

AZTimT

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Re: Checking in, found an oddball.
« Reply #6 on: August 23, 2015, 12:03:13 PM »

This is all I have for now, I didn't think to take pics before it got too dark to do so last night.
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

KODIAK

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Re: Checking in, found an oddball.
« Reply #7 on: August 23, 2015, 12:24:44 PM »

Looks good & a rare find I see some one has put the diesel bumper on it
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AZTimT

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Re: Checking in, found an oddball.
« Reply #8 on: August 23, 2015, 05:01:32 PM »

Did the diesel bumper not come standard on the newer 6.5 HD's? This 2000 is going to be the newest truck I've ever owned. :)
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

240g

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Re: Checking in, found an oddball.
« Reply #9 on: August 23, 2015, 05:05:47 PM »

Wow, $1500 that's a find!
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AZTimT

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  • K3500HD from when it wasn't just a sales gimmick!
Re: Checking in, found an oddball.
« Reply #10 on: August 23, 2015, 06:27:57 PM »

I thought so too! He wanted a little more, but in my area very few people know what an HD is, let alone appreciate it and with a bad motor even fewer will look at it. This is the only pic I took last night with serial edited out.
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

KODIAK

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Re: Checking in, found an oddball.
« Reply #11 on: August 23, 2015, 11:34:59 PM »

The HD Diesel did not come with the bumper cut outs like the 2500/3500  they had to have them for more  air/cooling  The HD filler panel had fins/ cut outs in them so bumper cut outs where not needed  Gas & Diesel HD used the same bumper
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someotherguy

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Re: Checking in, found an oddball.
« Reply #12 on: August 24, 2015, 09:26:21 AM »

My '94 had the diesel bumper too, but it also had the rubber strip like a Silverado, and bumper guards too.  Pretty clear someone just slapped it on there, considering the guards, most likely off a diesel-equipped Suburban.



Tim - yeah, I'd guess they stretched the 135.5" wheelbase frame about 24" to get the extended cab body to fit on there.  Probably worked out better in the long run as I believe when you put the extended cab body onto the 159.5" I *think* but am not sure, that the kickup in the frame forces you to notch the rear of the cab a little bit.

Here's what I'm really wondering though.  It's easy to transplant the glovebox from the old cab to get that VIN/SPID label moved over, but what does the actual VIN tag on the dash show?  Does it match?  If it does, then I'd wonder...did they graft an extended cab portion onto the rear of the cab, or did they...sshhhh...swap the VIN tag from the HD's original regular cab, over to the extended cab body?

Either way, what a great find!

Richard
« Last Edit: August 24, 2015, 09:28:34 AM by someotherguy »
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06 Silverado ISS / 06 Silverado SS / 06 300C SRT8

AZTimT

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Re: Checking in, found an oddball.
« Reply #13 on: August 24, 2015, 02:25:22 PM »

Richard, the frame was stretched about 24" on the straight section under the cab where it is covered/reinforced by the second frame section and the welds looked really good. It was straight cut instead of Z with no fishplating, but it has held up to over a dozen years of railroad life with that heavy box on there, so I doubt it will ever be an issue. The vin on dash matches, one of the first things I checked. The roof/skin of the cab didn't sound like it had any thicker areas where it would be grafted. The top and bottom of the cab in the third door opening did not have any noticeable weld/body work areas or other imperfections either. The entire cabt has the typical flaky post-emissions era GM paint over grey primer, so I am inclined to believe it is a factory 3 door extended cab.

I figure this was all done by Monroe before Janesville gave it the stamp of approval, so technically it was all part of the original manufacturing process and should not have been any legal issues. If a guy didn't look at the frame close, he would think it was all factory. Where I live now, it won't ever be an issue anyhow as MT doesn't get too nosy on such things, or inspect at all on title transfers, even out of state. Permanent plates for a couple hundred bucks is nice too on anything 11 yrs or older! :D
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...

KODIAK

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Re: Checking in, found an oddball.
« Reply #14 on: August 24, 2015, 05:38:46 PM »

Yeah, I put a 98' C-3500 Silverado diesel bumper on my HD. I like the cut outs for my jumper, cable, winch, & power cable hookups.
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