Repowering M, with 400 engine

dean jasper

New User
Bringing my Dads 47 M back to life. Repowering with 400 engine. Can anyone out there give some helpful information? I believe I have to change governor, & clutch, flywheel.
 
I have seen some of the guys do that
switch with 350 an 40s and they do good
for the couple of the tractor pulls only
to have guys at the next pull be a bunch
of rule police and get them to have to
pull in the open class or imove class. I
think it is cool when someone builds a
tractor to pull and to do good with it. I
have seen some Hs with 318 360 350 an
bigger in them an they do good. On the H
and M with a bigger crank and cam and
bore a guy can get very good power out of
them an look stock. In pulling you can do
any thing you can to the tractor as long
as u don't win or beat someones buddy
then the next pull here comes the tractor
club police.
 
Here in Southern Illinois have to be at least that big to not power out in 1st. No body will care if you have a 400 450 motor. Because theirs will be 100 cu. Bigger.
 
Take orginal block pull sleves and run 450 pistons and use 450 head manfold head carubator.
 
Use the 400 flywheel and use a super m
clutch disk. It's 12 inch compared to
11.5. Everything else will bolt in, keep
400 governor.
 

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