Machining Farmall 300 head... How much is too much?

Samzam

New User

I was wondering if anyone had
experience with putting a Farmall 300
head on a H. I want to machine it down
to get some more compression. But don't
want machine too much off. Do you think
1/8 in is too much?
 
Like 44MASSEY says, just enough to make sure it's straight. If you want a decent compression increase you're farther ahead to get custom pistons.
 
I put a 300 utility on my H and I believe they took off sixty thousands. I am cheap though and didnt want to have to re grind any passages.
 

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