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lol been waiting for the other side to chime in,,,,,, been a while… bob

Awwwww someone is jelly

Thank you. I will update when the project is completed lol

Ok, I am going to bow out. You seam to be set in your plan, I have expressed my concerns, and what is legal, good luck.

These are the new axles I’m going to put in. The tires are only 2” larger in diameter so I think I should be okay for clearance.

well, I don't see any brake chambers on the front axle. That is not legal either. Time to fully assess what you have and don't. Law is brakes on all axles, functioning and plumbed with DOT approved fittings. Where you are now is no where near legal, and "upgrading" has to take a back seat to getting legal.

Hi milage Ferrari

Yea Reagan sucked too

The new tires are only 2” larger in diameter than the old ones so I should be fine as they are after doing some more clearance measurements. I also called a local truck&trailer shop and they have the valve I need as well as all the fittings. Just have to get the new axles in before I go get it all so I can get enough air lines. This is the only photo I could get to upload. Getting an error -200

is the Neway air ride factory?

ON THIS DAY in 1911, Ronald Reagan was born in Tampico, Illinois. In 1981, he took office as our nation's 40th president, the greatest of the 20th century. Farewell Address: "We did it. We weren't just marking time. We made a difference. We made the city stronger, we made the city freer, and we left her in good hands." C&P Patriot Post

I wonder if earth moving machinery and farm machinery etc have different emission rules than trucks Paul

Engine is obviously a replacement/reman, but that does help with axle ratio, unless those also have been replaced.

Big Cam III 400HP, Fuller RTO14613, 4.10 Rockwell/Meritor rears. Their fault for providing a VIN haha.

Thanks for that.Im delighted you put that here.I got one in 1978 or 79 I know it was shortly after seeing the film.I built it and of course painted it the same as Pig Pens (badly) I still have it but it has suffered the ravishes of time and house moves.Im thinking of building another one when I get the real one finnished.Oh and I still have the original box.... Paul

Likely a Big Cam 3, Could possibly be a Small Cam Magnum, I can't see enough of the cam follower covers to know. Would be nice to know axle and ratio. Talk about rode hard and put up wet. A little cleaning would make it sell better.

I didn't even know that there was a scale model section 😯 I can honestly say I never read anything and check it's in the correct section, unless some jokers are having a ding dong argument about the section and it's content Thankfully this rarely happens Paul

No affiliation. Just passing along an upcoming auction listing I saw for a pretty scarce model of MH. Not too often you see an MH with factory "big power". Would be a nice unit for someone looking to run an MH or vintage cabover with good specs for contemporary times. 1985 MACK MH633 Upcoming Auctions in Washougal, Washington | Equipmentfacts

Can you provide a photo of both axles and we can see better whats going on So like this but showing both axles and braje assembly's And a photo showing a lot more of the trailer length ways like this one but showing a lot more front ways as well Sort of hard to tell what has happened without this type of basic information At first glance it looks like axle was changed but maybe just a couple of hubs, maybe brake shoes were made of unobtainium so different hubs were popped on a axle to get more common shoes Maybe it did have 20" wheels from new, however I tend to think Geoff is more likely right with 15" wheels A lot of maybes and I'm a bit to much of girly man to offer any advice on brakes and axles with out more information They (brakes and axles) are far to important to be guessing my way Paul

255 70 22.5 is the smallest you'll be able to fit to what you have there now, Will be smaller than the 9.00x 20s'. I'd still check before I assume. Loaded will make a difference.

https://fordauthority.com/2026/02/ford-motor-company-sales-numbers-figures-results-january-2026-usa/ Ford 'heavy truck' (650 and 750) sales are down another 21% for January. That may be the result of the model year changeover (They are building 2027's now) but there were no real changes to the truck for 2027.

I realized that I wouldn’t be able to swap to 17.5 after i got off here and started thinking about it more. i shouldn’t have a problem with clearance with the 22.5 because i drug that trailer across a couple ditches and the wheels were spinning freely.

I think this was only about licensing for the emblems on GM trucks. Yes the GM 10 speed was designed and is manufactured by GM, but Allison did consult on it. FWIW, a lot of Allison automatics were assembled in GM Hydramatic plants...