67RModel

Go to the truck shows and events area of this forum and click on the Macungie thread. Scroll down towards the bottom and there is a big picture otherdog posted of a real tricked out late model international owned by Tackaberry. Cliking on that picture takes you to otherdog's flickr album of Macungie 2022

Yea a good running triaxle for 10Gs it hard to complain about. However, I would verify the rear end ratio and install the proper TRXL107 6 speed transmission in it and go to work. Building that truck into what you are describing is honestly an exercise in futility. You would be so much further ahead to find one already set up that way and tweak it from there. You never did say if the trans was an Eaton or Mack 13 speed. I'm assuming Eaton. Like blackdog2 said if its the 12513 or even a little 9513 that 675 Maxidyne will shred it in short order if you are really working it.

Nice. What rear ratio? I think City Welding and Cobra Bodies merged around 2012 but may be defunct now? I think Cobra was from somewhere in Eastern Pennsylvania and City Welding was very close to where I'm from in New Castle, PA. Did you buy truck/bed new?

The gold dogs have been discussed / debated on here many times over the years. The short answer is gold dogs have had different meanings at different points in time. When the Maxidyne engine first came out (1965 or 66) a gold dog was an indication of Maxidyne power. Later on they meant all Mack powertrain (engine, trans, rears). In your case I would say the truck should have gold dogs on it since you meet both requirements. All Mack components and R685 indicates it would have a Maxidyne under the hood. I have no clue as to whether or not door emblems were an option or meant something else.

What are the specs on your CL? Looks like a beefy setup.....12R24.5 rubber on 58,000 rears.

My 0.02. Pretty much what Freightrain said. Not sure why you would need (or want) to have a Maxidyne make more than 300 horsepower. They just are not designed that way. The torque rise on these engines is incredible. Mack knew what they were doing when they made that engine and matched it to the extended range transmission and proper rears (which makes me think the 13 speed was added by someone later). Trucks with this power train and these specs just were not set up to run 300+ horsepower and an 18 speed transmission. Could it be done? Probably. But I think you would be further ahead to just find one already set up that way with an E6-350 4V or E7-350/400. If I was trying to achieve more than 350 horsepower I would definitely be looking for an E7.

I also heard that when the R model cam out there were a lot of left over B models sitting on dealer lots and Mack corporate authorized the dealers to switch some of the B models to R models by shipping them R model cabs and having the dealers change them. A letter "R" was stamped into the frame after the B model serial number. Any truth to this? The old timer who told me seemed pretty knowledgeable on the subject.....

Not mine but I saw it on my local Craigslist. Just sharing. Looks nice. Not sure its a 1967 though. I thought B models were done by '67. https://pittsburgh.craigslist.org/cto/d/gibsonia-1967-model-mack-dump-truck/7496802853.html

I forgot I have two stainless covers off of a 2001 RD. They are pretty dull and faded but with a bunch of sanding, lapping, and polishing I'm guessing they could be brought back to being shiny again. I will donate one of them if you are interested but it looks like you are in Cali.....

1998 is probably VMAC 2 or VMAC3. There are some really good VMAC experts on here who will be along with a diagnosis. I hade the exact same thing happen to me with a series 60 Detroit. Cut in and out but not go into a limp mode like you are. Ended up being poor connection at the battery to the cable that fed power to the ECU. Sometimes it the simple things.

The Watt's B model store has them but be prepared to surrender one of your best quality extremities for it.....$408....Genuine Mack....... http://www.wattstruckcenter.com/store/index.php?route=product/product&path=59_73&product_id=478 I guess if you need one then you need one.

Then old man Biden swooped in and took credit for airlifting 1 million pounds of powdered formula from Spain.....

Its like the baby formula "shortage". Hear me out. My wife and I had our first baby On February 22 of this year. I distinctly recall the nurses in the labor and delivery unit talking about a certain brand that had just been recalled and the plant shuttered by the FDA. That's the last I heard about it until it popped up in the "news" in mid May. From mid February to Mid May (3 months) there was zero problems getting formula. Any time we went to the baby section of a store the shelves were stocked. "News" ran the story and got the sheeple into classic panic buy mode and the shelves literally emptied overnight. Here it is about 4 weeks after the "news" story and you don't hear jack about it anymore and the shelves are about 3/4 full in my local stores. To boot the shuttered plant has reopened but not produced anything yet (and got flooded yesterday and had to close again). So I have to ask: was there ever really a shortage? Didn't affect me since we don't use formula but I can attest to being able to easily get it before the news scared everyone. Now that the supply chain has recovered from the panic buy you can walk into any store and get it again no problems....

Not to sound like a $hithead but honestly how is the one millionth Mack any more special than the 999,999th one made or the 1,000,001 one made, presumably on the same day within hours or even minutes of the one pictured? It really is just a meaningless number. Mack continued to churn out "real Macks" up until around 2002 or 2003. I just don't see how its any more special and/or valuable than any other equivalently spec'd Superliner made around that timeframe.

I don't know about fitment, bolt up, and linkage modification etc but I would think @Vladislavwould know the most on this. I think he has done several transmission swaps over the years. What rears do you have and what do you do with the truck?

Same concept but different ratios (and rear end ratios). Both were intended to be paired with a Maxidyne engine. The TRL107 is direct (1:1) in 5th whereas the T2050 has the very fast overdrive (0.6:1) in 5th. All T20X0 transmissions with 5,6,7, or 8 speeds had the 0.6:1 overdrive, were direct in 4th, and were paired with very slow rears usually (5.73 to 6:39 or higher numerically). Trucks with a TRL107 usually had 4.00 - 5.00 rear end ratios. A T2050 will have 5.24:1 in first gear, 1:1 in fourth, and 0.6:1 in 5th. Don't know what 2nd and 3rd would be.

This is a little confusing to me. Are you saying if it rotates easily when cold (engine not running) then replace it? I though they were supposed to rotate easily when cold. I have a viscous clutch on my E7 and am just doing a good once over on the cooling system since the really hot days are coming. Thanks.

Yea there is old iron literally laying around everywhere over here. Everybody’s garage or old barn has stuff sitting in it. If you take secondary and rural roads through just about anywhere in the States you will see stuff sitting everywhere. Kind of sad in some ways and kind of good in other ways I guess.

Where the heck is this? California? Look at all those class 8 gems sitting there waiting for new homes....

I take it that is what happened to you? If so that is terrible. I heard the teamsters officers used its members funds to finance casinos and hotels and stuff like that in the 70s. (Hoffa stuff). Didn't know that still went on in more modern times. It seems the politicians on both sides are interested preserving as well as expanding the 401k model. Sometimes its tough to watch you account balance be so volatile but on the other hand I just can't imagine giving so much of your wage away to some union officer in the hopes that they will do the right thing and it will be there when you retire.

Everyone I ever talked to who had recently retired said they wished they would have done it sooner. I have heard several times that guys thought they wouldn't have enough money but once they start getting social security, pension, and 401k distributions they end up making more in retirement than they did working.

Was a B421 diesel? I was always told with B model nomenclature that model numbers ending with an odd number were diesel, and model numbers ending with an even number were gas.....it holds true for everything I've seen but I havent seen much and I don't know a whole lot about B's

Typically there would have been a small rectangular metal plate screwed to the inside of the drivers door with model and serial number, but a lot of times they go missing or disappear if the door was ever changed. The Serial number will also be stamped into the outside face of the frame rail on the passenger side just behind the front shock mount area.....essentially in the front right wheel well area. You will most likely have to get a wire brush and go to town on that section of frame and you will see it.

Somewhat unrelated question: How does that king pin attachment work on your gooseneck trailer? any drawbacks or things you might not think of if you never used one before? Thanks.

Found this beauty on Markeplace. Says it’s a good running truck. Pretty cheap considering the times…. https://www.facebook.com/marketplace/item/344085984529070/?ref=search&referral_code=marketplace_search&referral_story_type=post