The beast

Thanks mechohaulic! Yes it does not have a turbo. Still waiting for the neighbor to bring her back so I can search for the serial /VIN numbers. I will post more engine pics when he returns the old girl. 

Thanks for the information everyone. The neighbor borrowed it to haul some big rounds home so I haven’t got a chance to look at the engine block yet for numbers but I will as soon as he brings it back. Here is a picture of drivers side of engine  this was when we first went and got it  the other side has the Mack logo on the engine  it needed new batteries but fired right up  

Joey Mack- the ether was never used on the old Mack. We have an old Allis tractor and have had to use it on tractor. 
I will look for the serial numbers and post a picture of the engine. The engine is strong and starts right up. We have used it a lot to haul big rounds of hay. Usually 16 (1400 lb) bales with no trouble. Probably won’t get to post engine picture until Tuesday as it is Easter today and have grandkids coming down. Thanks for the info everyone. I  appreciate it!!

So I have an old Mack truck. The title was lost and the previous owner had it titled as a 54. But it has a R600 body. It also has all original interior and engine/transmission (2 stick). I have looked for the serial number on the engine but can’t find it. Can anyone tell me where to find it and what year they think the old Mack is? And how much it is worth.