repowering M with 345

Anonymous-0 · Oct 10, 2008

I have a M with a stuck and busted block. I also have a good running 345. How hard is it to place this engine in to the M. Do I use the M flywheel. If the M flywheel is used what happens to the balance. Also does the manifolds turn up side down on the 345 to give a verticle exhaust. Thanks for any help.

the tractor vet · Oct 10, 2008

To do this first ya have to use the back plate off the m engine and have it centered up and redrilled for the 345 then ya bolt that to the back of the 345 . And you do use the M flywheel and it has to be redrilled for the 345 crank . Now as far as balance sometimes ya get lucky and sometimes ya don't and if your not lucky then ya got to do a total balancing of all the rotating members . Now trust me here this is not going to be a direct bolt in and will require some BARNYARD engineering and some work with the gas ax and lincoln ready bolt.along with a governor off a combine and some barnyard engineering for linkage. Then one must keep in mind that that OLD flywheel WILL NOT TAKE A LOT OF RPM's and the M clutch will not stand up to the extra pony power . SO what we have done in the past and i do mean the past is that we have always went to a S/M or 400-450 flywheel and used the clutch out of a 706-806. BUt here again ya got to keep the RPM under 3000 because that flywheel just may come unglued and the bellhousing is NOT a scatter shield .

John Litzelman · Oct 11, 2008

What is the 345 engine that is referred here for a possible repower of an M?

RUSTNSUCH · Oct 11, 2008

It's an IH truck v8 engine

repowering M with 345

Anonymous-0

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the tractor vet

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John Litzelman

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RUSTNSUCH

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