Farmall m

[John henry]

Will a 4 inch sleeve fit in a stock 248 block 

 

[560Dennis]

got to measure the sleeve and the block in several places to decide if it will .

oops that a super m sleeve , don’t know , maybe these the tractor puller guys have had there machine shops bore it out. 
don’t think I would punch that block. Get super m block . 

[rustred]

On 11/17/2025 at 4:18 PM, John henry said:

Will a 4 inch sleeve fit in a stock 248 block 

 

should be a yes, as anytime them engines were overhauled they got 4 inch sleeves and pistons.  i have yet to find one with the original 3 7/8 sleeves. 

[ChaseIH]

The sleeve is just thinner and will go right in after some time in the freezer