67RModel

Don't forget the 837 CID V8 of the same family. I think it and along with the 351 and 478 Magnum version of the V6s were also available as Toroflow diesels. The gas burning semis of the time probably moved the same loads as the diesels did albeit slightly slower. Back then the weights were probably overall less than today and the world moved slower than it does today. I think back then it was probably acceptable and "normal" to have semis pulling steep hills at 10 or 15 mph.

Do you suppose there were 75 year old men sitting around in 1956 or 7 saying the very same thing about life as 5 year olds in 1886? About how it was sad that 5 year olds in 1956 had to stand behind their parents in a two seat automobile and how they would never get to experience taking 6 days on a steam engine train to get from St. Louis to Sacramento. It’s possible those men when riding on that train as 5 year olds came upon two 75 year old civil war veterans. One of those guys said it was sad these young kids get to ride on this train and will never get to experience walking 2200 miles from St. Louis to Oregon with their parents to claim free land.

My parents told me they were transported home from the hospital when they were born by being held by their mothers in the front seat of the car. This would have been in the early 1950s. I never thought about it but I assume car seats didn't exist then. You'd get sent to jail today if you did held your 3 day old baby in your arms and drove around in your car.😅 I did a quick google search on vintage infant car seats and they all look like death traps. They existed only as a convenient way to transport babies. Apparently they didn't have any actual "engineering" or safety features until well into the 1960s

To be clear the Powerstorke is 100% CARB compliant and the diesel powered F650/750 is 100% legal to be sold in CA. Ford voluntarily made the decision to cease sales of diesel powered 19,500+ GVW vehicles. Ford also disbanded from the Truck and Engine Manufacturers Association (EMA) when is started lobbying for less stringent heavy dudty diesel emissions standards. Certain Ford Super Duty trucks no longer available for sale in California - RV Travel Ford Excludes More Super Duty Diesel Sales In California - CarsDirect "A Ford dealer bulletin has surfaced that warns the “Blue Oval” truck builder is shutting off supply of certain Super Duty trucks in California. It’s all centered on Golden State emissions issues. The Super Duty shutdown is Ford’s decision—not something that California cooked up."

Call Watts Mack. Give them your VIN. They will tell you what you have and what you need. I think they have done this many times over the years for people. I have a friend who switched an 88 R686 with Budd steer and dayton drives all over to hub pilot. He spent 25 minutes on the phone with them and had all the answers. Parts were in stock. In his case he was able to reuse his existing wheel bearings. I wouldn't try to guess on something like this and/or get a bunch of maybe answers. Go straight to the source and save yourself a bunch of time and headaches. I would assume they would ship you the parts. I wouldn't want to pay postage or freight on new drums from PA to AK but I would imagine they could sell/ship you everything you need sans the drums and they could tell you the part number of the drums you need. Then you could source those locally.

Not to derail this gentleman's thread but I was browsing Flickr the other day and saw this picture. Looks like it was one of your rigs back in the day. The picture is owned by a fellow on there named Dick Copello with the user name PAcarhauler. He has hundreds if not thousands of vintage and antique truck pictures mostly from PA. I think he ended up with all or some of Ron Adam's photo collection. The photo info for this one says it was taken by Ron Adams but no year or location was given. Dick Copello’s albums | Flickr

For whatever reason, the forum software can't handle a actual size I phone picture. The file is too large. What I always do is take the pictures. Use the Mac mail I Phone app and email the pictures to myself. When you attach the pictures to the email message and hit send it will ask you if you want to send the pictures as small, medium, large, or actual size. I always just hit medium then send. Then I take those attached photos, which are reduced size from the message in my inbox and upload them. Its pretty ridiculous but it works every time. Sounds like a lot of BS but takes about an extra minute is all.

I would say probably the best known Mack restoration shop / specialist is Matt Pfahl in Connecticut. The other one I know of is Mickey's Macks, owner Mickey Delia in Jersey. I have zero experience with either of them, however, their names have come up often over the years when discussing Mack restorations and from what I have heard are they both highly regarded.

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.