66rmack

Sweet thank you! Any chance you know what the other numbers mean?

Hey guys new here. Trying to get info so I can put my dads 66 R Model back together. He bought it in 67 with about 15000mi on it and drove it till 84 when it blew a luber line and locked the motor up. It's been in the shed since then it serial is R609 ST 1127. My dad is getting up in age and I know if I don't help him with it It'l just be a dream of driving it again never a reality. He has had a bunch of macks including a LJ and a few b's it's been I. The shed longer than I have been alive and I want to see it as a whole as much as he does. I have already gained a lot of knowlage just reading old posts. Thank you guys I will post picks as the project heads into gear.

Hey guys new here. Went and looked at a 70 r model and was wondering if anyone could tell me what this engine serial# means? Looking for a 237 and 5 speed to repower my dads 66 r model that has a 711 turbo and a 5 and a 4. The serial # I found on the engine is ENDT 6754U902 there was a space after the 0 before going to the 2 but it didn't look like there was anything in the space. Any help is very appreciated I don't know much about the macks but I'm trying to get his old dog on the road again it's been in the shed since 84.