Trans swap almost complete

[Raven9]

I have almost finished my 8LL swap into my 78 R600L dump truck. The only issue are the transmission mounts. I have a set on it, of course only one hole is good, the other is a half hole. 

Does anyone have a source on a set of mounts that would line up, or am I just going to need to drill the holes out. 

The 8LL is a 2000 RTO came out of a  Mack garbage truck from what I was told. mine is the ol twin stick 5x5.

Thanks in advance for the reply's!

 

[67RModel]

Thinking objectively, I think a 600 series Mack with an Eaton transmission from the late 70s was quite scarce then. Probably like hens teeth now. I have little knowledge of the various Eaton transmission iterations, however, I wouldn't be surprised if the mounting locations on a late 70s Eaton are not the same as a 2000s era unit. That is to say even if you could find the correct factory mounts that line up with your frame holes they might not line up with the transmission. My guess is you are going to end up making what you have work via drilling and/or fabricating. My guess is it has been done many times over the years. Seems like many people who end up with an old Mack are looking to dump the Mack trans and swap in an Eaton.

[mowerman]

im thinking the same way,,,,i would take the mounts to a reputable machine shop,,,,,,,,if nothing else save alotta time and leg work,,good luck,,bob