67RModel

No S after the 3 numbers is single drive. S after the 3 numbers is a factory tandem. And a T at the end would be factory tractor. Mine was ordered as a single drive axle and the pusher axle was installed at the factory so I guess it was technically a tandem axle but was just designated as R685T. With that logic applied here, whether or not the tag axle was factory or aftermarket, this trucks designation should be R612T

The 12 or 13 is an engine designation just like the 86 88 or 90. In this case the 12 is designating an ETAZ673 “300+”. I forget what engine 13 would have stood for at the moment. There are threads here on the forum about it

There was bulk hauler around here that had company drivers when I was hauling frac sand. They had Volvo and some Mack Anthems setup like this for weight savings. These trucks were nuts. Day cab single axles with drop axles on super singles. 11 liter engines. single 90 gallon fuel tanks. Passenger seats removed. Weed burner exhaust. the lightest air suspension made. The works. Their trailers were the same way. Short 2 hopper all aluminum pneumatics on super singles as well. I assume they met the federal bridge laws but they had to have been top heavy because everyone else with a 900 or 1000 cu ft pneumatic trailer had 3 pods and was longer. My guess is they were probably 5,000 to 6,000 pounds lighter tare weight than a "typical" owner op doing the same work with big comfortable sleepers and big bore engines. The downside was this company had to put all their drivers up in hotels every day/night and they were slip seating every 12 hours or whatever.

@h67st had a couple of parts H models for sale a while back. He might have something for you.

That is what is interesting to me. I think that must have been a common thing back in the day around this area, especially with steel haulers. My 67 R model was ordered from the factory by an owner operator as a single axle with a neway drop axle as well. It was specified as a pusher in front of the drive though. Also, a good friend of mine has a 69 R model that was spec'd the same way by a local owner operator steel hauler. I was told a lot of owner ops could cheat some scales by adjusting the air pressure accordingly. I wonder if the person that put this truck together obtained an inexpensive used up single axle day cab from one of the LTL companies but wanted a tandem sleeper. Mounted the sleeper box and then added the dead axle off the back to avoid having to do a frame stretch. I think that is how a lot of guys did things back in the day. Take what you have and make it work. I think its a near perfect example of a Mack.

What's the story on why this one essentially sat unused for all these years? Just curious.

Not mine. Saw on FB Marketplace and figured it would be worthy of posting here. All I can say is what a gem.....this thing is perfect in every way. 1980 Mack R612T - Commercial Vehicles - Wooster, Ohio | Facebook Marketplace | Facebook

The last class 7 / 8 trucks GM made looked like this

Back in the early 2000s you could still get a GMC C8500 tandem with a Caterpillar C7 at 350hp. A lot of them had Eaton 8LL transmissions. Its possible someone could have added a pusher axle to one of these and that is what you saw. Not sure when they stopped that series of trucks but it was probably at least 10 years ago now. There was a period of time when the biggest thing GM made was a 3500 pickup. Then probably 4 or 5 years ago now they came out with that 45,55, and 6500 series of trucks made by Navistar. But only as a Chevy. And like I said the highest GVW available is 23,500lbs so only single axle setups. Down right hideous if you ask me.

According to their website they don't make anything larger than a 3500 chassis cab anymore. 14,000 GVW max. Chevy on the other hand makes a 6500 with a max GVW of 23,500, which I believe is just a rebadged / joint venture Navistar product with GM engines under the hood.

Everything is a conspiracy these days. What happened to all the "sources"? I would like to see just one of them. Let me guess. Soros paid every single web domain owner, newspaper, tv, and radio broadcast station to never say anything else about it. You would think if Juan Merchan accepted bribes then Pam Bondi and company would have had him and the entire Manhattan DA's office down to the janitors in chains on January 21st. Not only that but a judge has next to zero to do with finding a defendant guilty.

Please cite the evidence or source to this claim. My guess is he/she was making that statement from a position of confidence having seen all the evidence. I’ve never seen an unconfident or humble trial attorney. Trumps defense could have said Mr. Trump will be found not guilty a month before the trial date was set. Lawyers will be lawyers…… I was selected to a jury about 15 years ago and the prosecutor said the exact same thing in his opening remarks. He said something to the effect of: “the state will show you overwhelming evidence and the defendant will be found guilty.” Sure enough the guy was without a doubt guilty. I was selected as juror #14 and on the final day all the original 12 were present and of sound mind so I was released and didn’t have to deliberate. My guess is it took the jury 15 minutes to come to a verdict.

That is an incredibly serious allegation. I'd be curious to see what insane corner of the dark web that opinion was formed from. I'm not saying he got a fair trial. I don't know. But that statement is laughable.

He must have committed something. After all he was convicted of 34 felony counts.....Do you think he was wrongfully convicted? I honestly don't know what to think of it. On one hand the jury was convinced beyond a reasonable doubt that he committed the crime(s). On the other hand its really hard for me to believe that he got an unbiased trial in Manhattan. On the third hand the crimes, although felonies, almost seem like technicalities. As I understand it, it is not illegal to pay hush money to someone if the information or act being kept secret is not illegal. Last I checked having an affair with someone, although majorly lacking morals, is not illegal. So the manner in which the payments were made and/or reported were falsified almost seems like a technicality to me. But if he wasn't prosecuted then it would essentially say he is above the law because lets face it, if this happened to anyone else you can guarantee the law would be coming down heavy on them and they would probably be looking at some form of fines and/or punishment. You have to remember Michael Cohen admitted to the whole scheme and literally rotted for three years in federal prison for his part in it, among other things.

He is a member on here and has listed trucks for sale in the past

Isn't that how how the nickname TACO was coined? Miniscule amounts in the overall American car market. Trump's administration was negotiating with Japan, not vehicle manufacturers. I suspect the reduction from 25 to 15 was thrown in as a concession for something gained knowing it would have next to no impact on domestic OEM's competitiveness. Your original statement was that Ford and GM were upset and claimed Japanese makers were buoyed. Perhaps. Maybe the Japanese created their own buoy when they increased the percentage of USA assembled/sold vehicles from 12% in 1986 to 80% today. Not to mention they produce a vastly superior product. Maybe Ford and GM can build a plant in Japan, pay 300-400% more for Japanese vs Mexican labor and get the 10% tariff reduction 😅. Or better yet maybe they should have never left. I have no sympathy for the Detroit big 3. It is lost on me how the Japanese can build an objectively superior car with American labor on American soil and never complain about anything. The only thing Detroit knows how to do well is cry foul about anything and everything. They need to figure out how to plan 10 years out, not just for the next quarterly earnings report. I have little to no opinion on any of the tariffs implemented in the last 6 months. My guess is when the pendulum swings back they will all be rolled back. Perhaps the actual, newly negotiated and signed trade deals will remain but I think the newly imposed blanket tariffs on all goods coming into the USA will be rescinded.

Had to look it up 😅. Wasn't familiar. Never hard of them.

Its obviously more complex than that. Japanese brand cars made in Japan and shipped here represent not even 8% of the annual US auto market. Japanese brands have assembly in plants in Mexico that would be subject to the same 25% tariffs as domestic brands built in Mexico. Japanese brands assemble the majority of the cars they sell in the USA in US plants. My guess is the 15% tariff on imported cars assembled in Japan was a miniscule concession and/or compromise on the whole trade deal with Japan that most likely included many things.

If you didn't watch the whole interview don't even bother to watch the short......As with anything its taken out of context for clicks.

I thought you were supposed to relax in retirement. Here you are breaking down split rims with a pick axe. 😅

While the expenditures he is discussing are lunacy, the man just voted yes for a bill that cost US taxpayers $3,500,000,000,000 (3.5 trillion). Now he's yapping about cutting $9,000,000,000 (nine billion). Hmmm. 9/3500 = 0.2%. I think he is a hypocrite.

2005 Mack Trucks CV Series Granite CV713 Electrical Wiring Diagrams Manual | eBay

I have zero clue about anything made after 2007. What is the worst that could happen? It needs a major emissions system repair? What the worst case scenario of that costing? I would figure out what that dollar amount is. and if you can stomach that bill a week after you buy it then I would go for it. Like someone else said the engine itself should be good for double that amount of miles. Based on what I have heard with these new trucks if you want an automatic Allison is the way to go. Then again the same truck with an Allison would probably be $30,000 more than the one your looking at. Same goes for the MDrive. I would see what the worst case repair for that unit typically is and go from there. Anything is possible but its statistically unlikely that you would have a catastrophic emissions system and transmission failure at the same time. Is it possible to get the VIN number and take it to a Mack Dealer and see what major repairs have been done on it. I don't know if dealers are connected like that nationwide but its worth a shot even if its just to see if there are any outstanding updates and/or recall items.

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