61 4000 B-Model
 

Hey guys,

Just wanted to start off by saying that this is the best web site ever ! I just kind of stumbled upon it researching some info on my truck. That being said I have scoured this site up and down. I am trying to figure out if the truck that I have is all original. Is there any way to tell if the engine, trans and rear end match the cab? As far as I can tell everything looks original but as we have all known looks can be deceiving. I got the truck about 2 months ago and have been slowly working on it. The truck is a 2 1/2 ton grain truck with a dump bed. I know that it is bigger than most of the trucks on this site but as far as the engine and possibly the trans are the same. I am really back and forth on what to do with this truck because it is so big I am not sure that I can really do anything with it as far as drive it down the road like back and forth to work because I live about 45 minutes away from work as it is and that is mostly highway driving (and the truck has 6.17 gears with a 5 speed in front of it so we are probably talking about 50mph tops) I bought the truck in the idea that I was just going to yank the cab and make a rat rod but the more I mess with it the more I want to keep it the way that it is. Anyway I would like to know if there is any way to tell if there is a way to check and see if it is all original. The kicker is that it only has 42,000 miles on it. I know that everyone likes pics so here is a few of the truck. The stacks are just setting on there and not hooked up. just set the there to see what it looks like. THanks in advance for any help you guys can give.

Re: 61 4000 B-Model
 

Those old B models are awesome! Wish I could help but I don't know c'mere from sic'em when it comes to those. I'm sure someone will chime in though. Have you PMd other B model guys like sc1337?

Re: 61 4000 B-Model
 

I just figured I would start here and see where it takes me. I am still new to all of this and not sure how to do all of the fancy stuff yet like pm :)

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Re: 61 4000 B-Model
 

:thumbsup:For the most your B model truck looks correct by the pics, even the seat looks original. It looks like it has the optional 305C V6 with 2bbl carb or possibly a 351C V6 rather than standard 305B V6 with 1bbl.

Re: 61 4000 B-Model
 

It is a 2bbl because I just cleaned it to get it running. The tag in the glove box says that it is a 305 but not sure what letter it is C B or what ever I know about the numbers on the block and have not got them yet but is there any way of telling that it is the original one that it was built with. Or am I just being to picky here and I should just go with what I have and not worry about it.

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Re: 61 4000 B-Model
 

I can see it is a 2bbl so that would make it a 305C

Re: 61 4000 B-Model
 

The engine numbers will be on the front of the engine block right below the passenger side cylinder head:ok:

Re: 61 4000 B-Model
 

Ok awesome ! Thanks. Do you have a b-model ? I am just curious because I would like to know what kind of speeds I am looking at. I know its not a speed demon just curious.

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Re: 61 4000 B-Model
 

No I don't have a B-Model but the GMC V6 is my passion! I grew up around two brand new GMC 4wd pickups, the first was a 62 K1000 and the second a 68 KM-2500 which was handed over to me. Both V6 powered and now the 68 has a 478M V6.

Re: 61 4000 B-Model
 

That's cool that it is kept in the family handed down. So is your family the original owner ? The only thing that I ever got handed down to me was a lot of advice :)

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Re: 61 4000 B-Model
 

Absolutely, I was with my father when he took delivery of the 68 on March 1 1968 and still have vivid memories of when he brought home the new 62 on a Saturday morning back in 62.:upyes:

Re: 61 4000 B-Model
 

That's awesome ! So since you are the engine man, I have a few questions. I just got the truck running and moving and stopping. So now I need to get the oil changed. What type of oil do you use? is there a better oil over another or should i just use a regular oil? I have a canister filter on it, is there a better filter over another?

Re: 61 4000 B-Model
 

You can get a dozen different recommendations on types of oil to use, back in the era of your truck SAE 30 was common. For now in my 478 I'm using Shell Rotella 15W-40 that's for Diesel truck engines. I'm using it as a break in oil because of it's zinc content and most likely will keep using for some time. I may try synthetics after the engine is well broken in after 5000 miles.

Re: 61 4000 B-Model
 

As far as the cannister filter, your truck should have the large 2 1/2 quart type which will be just fine. Just stick with a good quality filter like a Wix or NAPA filter.:ok:

Re: 61 4000 B-Model
 

Rotella would be ok with me as I am fairly familiar with diesels. Thanks for the help !

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Re: 61 4000 B-Model
 

hey Jofus! Familiar with Diesels, eh? I might have to tap your shoulder on a 7.3 Ford from time to time. :teehee:

I just spent the entire summer cutting my mechanic teeth on one, getting her ready for driving. Whole different animal, them diesels are!:thumbsup: She still smokes like a freight train in winter (white smoke at startup) but she runs like a champ otherwise.

Re: 61 4000 B-Model
 

Fetch yeah I have been around them my whole life. I work at a Mack truck dealer ship now. I am kinda the opposite the gas is different to me :) not as familiar with the 7.3 as I am with the 6.0 but I have plenty of friends that know there way around the 7.3s really well :) but yeah definitely don't hesitate to ask !

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Re: 61 4000 B-Model
 

I through in a pic here of the 62, this was taken in Dec 1964, and yes it was equipped with hubcaps from the factory.

Re: 61 4000 B-Model
 

Wow ! That would be one cold camping trip. Nice looking truck.

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Re: 61 4000 B-Model
 

That was a cold trip up to Lake Tahoe exactly this same time of the year 51 years ago, I was just 5 1/2 years old. if you blow up the picture you'll see the little kid looking back at the rear window, that was me!

Re: 61 4000 B-Model
 

Wow that is a cool picture with some good memories.

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Re: 61 4000 B-Model
 

Here's another pic of the 62 nearly 3 years later with more accessories added as well as winch and extending the front bumper and wider tires. A couple of the 68 as well.

Re: 61 4000 B-Model
 

That is awesome! Let me guess... You were looking out the back window to make sure the old man didn't forget the propane tank on the tounge of the camper for the furnace. : )

Re: 61 4000 B-Model
 

Actually what was going on was my father went inside the trailer to check up on how my mother and older sister were doing. Yes that was illegal to have passengers inside the trailer when towing but there was the whole family on this trip which also included my grandmother and younger sister that rode in the truck with us.:ahhhh: